AGK Moodle Practice Test Flashcards
1
Q
If the static source becomes blocked during flight the instrument which will read zero is
a.
the airspeed indicator
b.
the vertical speed indicator
c.
the altimeter
d.
the suction gauge
A
Pitot/Static Blockages
AGK 10.9
The correct answer is: the vertical speed indicator
2
Q
The function of oil in an engine is to a. Lubricate b. Clean c. Cool d. Seal
a.
a, b, c and d
b.
a and b
c.
a
d.
a, b and c
A
Function of Lubricating Oils
AGK 6.5
The correct answer is: a, b, c and d
3
Q
For a given power setting which of the statements is true for mixture adjustment
a.
the highest air speed is obtained with the mixture set to peak EGT
b.
the highest air speed is obtained with best power setting
c.
changing mixture does not affect air speed
d.
the highest air speed is obtained with mixture fully rich
A
Piston Engine - Fuel Metering
AGK 5.2.21
The correct answer is: the highest air speed is obtained with best power setting
4
Q
The Grade (octane rating) of automotive fuel is:
a.
The same as AVTUR
b.
Higher than AVGAS
c.
The same as AVGAS
d.
Lower than AVGAS
A
Aviation Fuel
AGK 5.1.1.2
The correct answer is: Lower than AVGAS
5
Q
If the aircraft battery became unserviceable (eg collapsed cell) during flight, an indication would be:
a.
High charge indication.
b.
Low voltage indication.
c.
Low charge indication.
d.
High voltage indication
A
AGK 8.4.3
CASA MOS 1.2.9.CAKC.2.2.1.C
The correct answer is: High charge indication.
6
Q
The engine RPM reduces when one magneto is switched off during the magneto drop check because:
a.
half the cylinders are not working
b.
the fuel combustion is less efficient
c.
the spark is stronger
d.
the spark is weaker
A
Magneto Functional Checks
AGK 4.6
The correct answer is: the fuel combustion is less efficient
7
Q
The Full Throttle Height (FTH) of an aircraft is:
a.
The height at which the engine cannot produce maximum RPM.
b.
The height at which the aircraft will no longer climb.
c.
The height at which the aircraft rate of climb is less than at sea level.
d.
The height at which the engine cannot sustain a given MAP.
A
Supercharging Terminology
AGK 11.5
The correct answer is: The height at which the engine cannot sustain a given MAP.
8
Q
In an engine fitted with a carburettor and a constant speed propeller, the absence of carburettor ice may be confirmed by applying carburettor heat and noting an immediate
a.
increase in manifold pressure with a gradual change
b.
decrease in manifold pressure with no further change
c.
increase in manifold pressure with no further change
d.
decrease in manifold pressure with a gradual change
A
Carburettor Icing
AGK 5.4.4.3
The correct answer is: decrease in manifold pressure with no further change
9
Q
During the second half of the power stroke;
a.
Pressure and temperature are decreasing.
b.
Pressure is increasing and temperature is decreasing.
c.
Temperature is increasing and pressure is decreasing.
d.
Pressure and temperature are increasing.
A
Piston Engine - Design and Operation
AGK 3.3
The correct answer is: Pressure and temperature are decreasing.
10
Q
Increasing the RPM of a normally aspirated engine will allow more air to enter the cylinders during the Induction Strokes per unit time, this therefore:
a.
decreases volumetric efficiency.
b.
decreases I.H.P
c.
increases volumetic efficiency
d.
increases thermal efficiency
A
Volumetric Efficiency 3.4.4
The correct answer is: increases volumetic efficiency
11
Q
Valve lead occurs when:
a.
the exhaust valve opens before the piston reaches BDC.
b.
both inlet and exhaust valves are open at bottom dead centre.
c.
when both the inlet and exhaust valves are closed at the same time.
d.
when both the inlet and exhaust valves are open at the same time.
A
The correct answer is: the exhaust valve opens before the piston reaches BDC.
12
Q
The fuel/air ratio of a carburettor is maintained approximately constant over the operating range of the engine by
a.
mixture control valve
b.
diffuser
c.
choke venturi
d.
main jet
A
The correct answer is: diffuser
13
Q
The carburettor heat check conducted on the ground should consider
a.
FOD ingestion in the HOT selection
b.
The possibility of detonation
c.
Spark plug fouling due to a lean mixture
d.
FOD ingestion in the COLD selection
A
The correct answer is: FOD ingestion in the HOT selection
14
Q
If the oil pressure gauge begins to fluctuate during flight
a.
the oil temperature is too low
b.
the oil pressure gauge is unserviceable
c.
the oil quantity is very low
d.
the oil temperature is too high
A
The correct answer is: the oil quantity is very low
15
Q
A measure of the actual fuel/air charge compared to the possible fuel/air charge in a cycle is defined as the:
a.
thermal efficiency
b.
volumetric efficiency
c.
compression ratio
d.
BHP capability
A
The correct answer is: volumetric efficiency
16
Q
Use of Partial Carburettor heat is
a.
not permitted
b.
permitted if the POH approves the use of partial Carb Heat
c.
only permitted when the aircraft is fitted with a serviceable Carburettor Air Temperature Gauge
d.
only permitted when pilots are at the advanced stages of training
A
The correct answer is: only permitted when the aircraft is fitted with a serviceable Carburettor Air Temperature Gauge
17
Q
The Volumetric Efficiency,which is the ratio of the Actual amount of air that enters the cylinder during the Induction Stroke to that which could Possibly enter at Standard Temperature and Pressure of a piston engine would be improved by :-
a.
Lower RPM and part throttle power settings.
b.
Higher RPM and full throttle power settings.
c.
Lower RPM and full throttle power settings.
d.
Higher RPM and part throttle power settings.
A
The correct answer is: Higher RPM and full throttle power settings.
18
Q
If the exhaust valve of a four-stroke cycle engine is closed and the intake valve is just closing, the piston is about to commence the
a.
exhaust stroke
b.
power stroke
c.
compression stroke
d.
intake stroke
A
The correct answer is: compression stroke
19
Q
The function of the contact breaker in the primary circuit of a magneto is to:
a.
Assist in the collapse of the magnetic field created by the permanent magnet generator
b.
Prevent the build up of excess static charge
c.
Time the sparks to the spark plugs
d.
Allow the magneto to be switched on and off
A
The correct answer is: Assist in the collapse of the magnetic field created by the permanent magnet generator
20
Q
On an aircraft fitted with a Turbocharger and a CSU, what actions are required to maintain a constant MAP whilst climbing?
a.
gradually open the Throttle
b.
gradually close the Throttle
c.
have the same propeller and throttle settings all the time
d.
Coarsen the Propeller pitch to reduce engine speed and compensate by opening the Throttle
A
The correct answer is: gradually open the Throttle
21
Q
Black smoke from an exhaust of a piston engine indicates
a.
an excessive build up of carbon in the cylinders
b.
the mixture is too lean
c.
that the mixture is too rich
d.
that the engine is burning oil
A
The correct answer is: that the mixture is too rich
22
Q
During one complete cycle of a four stroke internal combustion engine how many times will each valve open and close?
a.
Twice
b.
Four times
c.
Three times
d.
Once
A
The correct answer is: Once
23
Q
The indication shown on the face of a turn-coordinator when turning while taxiing on level ground is
a.
the ball remains in the centre while ever the wings are level
b.
a skid away from the direction of turn
c.
a slip in the direction of turn
d.
a bank opposite the direction of turn
A
The correct answer is: a skid away from the direction of turn
24
Q
The Direction Indicator provides
a.
the attitude of the aircraft at all times
b.
constant alignment with magnetic north
c.
a steady heading reference for approximately 20 minutes
d.
no ability for reuse after toppling
A
The correct answer is: a steady heading reference for approximately 20 minutes
25
The purpose of baffles on an air cooled piston engine is
a.
reduce the exhaust noise produced by the aircraft
b.
directs cooling air over the exhaust pipe to prevent the hot pipe from damaging the engine cowling
c.
to control the flow of air around the cylinders in order to direct cooling flow to the cylinder fins
d.
to allow the pilot to control the amount of air used in the cooling process thereby regulating the engine
The correct answer is: to control the flow of air around the cylinders in order to direct cooling flow to the cylinder fins
26
Fluctuating cylinder head temperature gauge readings are noticed during cruising flight. One possible cause is:
a.
that the mixture is over rich
b.
that all of the engines cylinders are pre-igniting
c.
the ice is building up in the induction manifold
d.
that there is a faulty electrical connection in the instrument circuit
The correct answer is: that there is a faulty electrical connection in the instrument circuit
27
Which stabilising surface provides directional stability?
a.
The rudder trim tab
b.
The rudder
c.
The stabilator
d.
The fin
The correct answer is: The fin
28
Compression rings are:
a.
used to keep combustion pressure on top of the piston
b.
used in pairs to maintain a cylinder safety factor
c.
fitted to the piston below the oil rings
d.
designed to seal the combustion chamber from oil
The correct answer is: used to keep combustion pressure on top of the piston
29
Which of the following statements about an alternator is correct?
a.
Unlike a generator, an alternator does not need an initial current from the battery-to set up a magnetic field.
b.
If you hand-swing the propeller, the alternator will come online even with a flat battery.
c.
An alternator is significantly heavier then a generator because of the heavy permanent magnets
d.
Unlike a generator, an alternator is able to maintain a relatively constant electrical voltage output, even at low engine rpm.
The correct answer is: Unlike a generator, an alternator is able to maintain a relatively constant electrical voltage output, even at low engine rpm.
30
Which statement regarding aviation fuel is correct
a.
Using a higher grade of fuel than specified usually results in lower cylinder head temperatures
b.
Using the next lower grade of fuel than specified is permissable if the specified fuel grade is not available.
c.
Using a lower grade of fuel than specified may give a reduced power output, but is less harmful than using the next higher grade of fuel than that specified
d.
Using the next higher grade of fuel than specified is permissable if the specified fuel grade is not available.
The correct answer is: Using the next higher grade of fuel than specified is permissable if the specified fuel grade is not available.
31
If maximum power is applied for take-off while the oil temperature is too low
a.
cylinder head temperature would become too high during take off
b.
power would be severely reduced
c.
take-off manifold pressure could be lower than normal
d.
the engine components could suffer stresses due to uneven heating
The correct answer is: the engine components could suffer stresses due to uneven heating
32
Valve overlap is measured in:
a.
degrees of crankshaft rotation.
b.
seconds of time.
c.
degrees of rocker shaft rotation.
d.
degrees of camshaft rotation
The correct answer is: degrees of crankshaft rotation.
33
The instrument which gives the most direct reading of an aircraft's attitude is
a.
inertial lead vertical speed indicator
b.
the direction indicator
c.
the turn and balance indicator
d.
the artificial horizon
The correct answer is: the artificial horizon
34
During a turn, the heading of a magnetic compass in the Southern Hemisphere will
a.
lag behind the aircraft when turning onto East or West
b.
lead ahead of the aircraft when turning onto North
c.
lead ahead of the aircraft when turning onto South
d.
lag behind the aircraft when turning onto North
The correct answer is: lead ahead of the aircraft when turning onto North
35
A fixed pitch propeller is designed to be operated?
a.
at a constant angle of attack
b.
at a constant RPM
c.
with a constant blade angle
d.
both subsonic and supersonic
The correct answer is: with a constant blade angle
36
When the Master switch is selected to ON:
a.
The battery is now connected to the Bus bar.
b.
The alternator is now connected to the starter motor.
c.
The alternator is now connected to the Bus bar.
d.
The battery is now connected to the starter motor.
The correct answer is: The battery is now connected to the Bus bar.
37
The duration of each stroke of a 4-stroke cycle engine is equivalent to
a.
Half a revolution so long as there are only 4 cylinders
b.
720degrees of crankshaft rotation
c.
360degrees of crankshaftt rotation
d.
180degrees of crankshaft rotation or half a revolution
The correct answer is: 180degrees of crankshaft rotation or half a revolution
38
The blade angle of a constant-speed propeller:
a.
Is independent of the true air speed.
b.
Only varies with engine rpm.
c.
Decreases with increasing true air speed.
d.
Increases with increasing true air speed.
The correct answer is: Increases with increasing true air speed.
39
An accelerator pump is fitted to:
a.
Reduce fuel flow as the throttle is retarded
b.
Inject fuel into the manifold with rapid throttle increases
c.
Increase mixture strength as altitude increases
d.
Ensure correct RPM function with richer mixtures
The correct answer is: Inject fuel into the manifold with rapid throttle increases
40
How is engine operation controlled on an engine equipped with a constant-speed propeller?
a.
The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine rpm.
b.
The throttle controls engine rpm as registered on the tachometer and the mixture control regulates the power output.
c.
The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates constant blade angle
d.
The throttle controls engine rpm as registered on the tachometer and the propeller control regulates the power output
The correct answer is: The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine rpm.
41
The pitot heat
a.
should not be operated for long periods of time in flight
b.
should be turned off whenever sub zero temperatures are encountered
c.
should not be operated on the ground except for testing
d.
should always be turned on in rain
The correct answer is: should not be operated on the ground except for testing
42
Operating an engine with high power and the mixture very lean can cause
a.
plug fouling and overheating
b.
backfiring and overheating
c.
a decrease in indicated air speed and low temperatures
d.
backfiring and low temperatures
The correct answer is: backfiring and overheating
43
A spongy feel in the brakes would be caused by;
a.
Air in the system.
b.
A leak in the system.
c.
Low hydraulic fluid.
d.
Wear in the brake mechanism
The correct answer is: Air in the system.
44
The ratio of the power output of an engine to the power developed by the pistons is known as:
a.
thermal efficiency
b.
volumetric efficiency
c.
compression ratio
d.
mechanical efficiency
The correct answer is: mechanical efficiency
45
Battery compartments are vented because
a.
the battery needs air to help keep it cool
b.
vents allow water to drain away from the battery compartment
c.
Flammable gases such as hydrogen are released whilst the battery is being charged
d.
heat from the battery can cause pressure build up in the compartment
The correct answer is: Flammable gases such as hydrogen are released whilst the battery is being charged
46
A toppled DG gyro :
a.
can be reset in flight
b.
must be re calibrated in the workshop
c.
should be turned off and left off
d.
will affect the magnetic compass reading
The correct answer is: can be reset in flight
47
A device that controls high current flow in an electrical system is
a.
a condenser
b.
a rectifier
c.
a circuit breaker
d.
a voltage regulator
The correct answer is: a circuit breaker
48
During a dive if power is not reduced, constant speed propellers may move onto the
a.
coarse pitch stops then slow down
b.
fine pitch stops then overspeed
c.
fine pitch stops then slow down
d.
coarse pitch stops then overspeed
The correct answer is: coarse pitch stops then overspeed
49
The propeller lever on an aircraft fitted with a CSU and variable pitch propeller is used to ?
a.
override the CSU
b.
select a particular pitch angle
c.
set propeller RPM
d.
ensure correct magneto function
The correct answer is: set propeller RPM
50
A single acting propeller (counter weight type) loses oil pressure during cruise flight. The effect on the propeller will be:
a.
Movement of the blades to coarse pitch.
b.
No movement of the blades.
c.
Movement of the blades to reverse pitch
d.
Movement of the blades to fine pitch.
The correct answer is: Movement of the blades to coarse pitch.
51
The CHT gauge and EGT gauge both indicate temperature. Which instrument would be a reliable indicator of possible detonation?
a.
Neither EGT nor CHT
b.
EGT
c.
Both EGT and CHT
d.
CHT
The correct answer is: CHT
52
The fuel flow indication in some fuel injection systems comprises an impeller to measure the fuel flow. With normal MAP and Mixture settings, an excessively high fuel flow indication would probably be a result of:
a.
A Broken fuel line
b.
A Blocked Fuel Injector
c.
Fuel filter blockage
d.
Mixture set too rich
The correct answer is: A Broken fuel line
53
Rotation around the lateral axis is referred to as: .
a.
Rolling, and is controlled by the ailerons.
b.
Yawing, and is controlled by the ailerons.
c.
Yawing, and is controlled by the rudder.
d.
Pitching, and is controlled by the elevator
The correct answer is: Pitching, and is controlled by the elevator
54
The volumetric efficiency, which is the ratio of the Actual amount of air that enters the cylinder during the Induction Stroke to that which could Possibly enter at Standard Temperature and Pressure, therefore in an engine, this depends on;:
a.
Throttle position and mixture strength.
b.
Throttle position only.
c.
Throttle position, ambient temperature, ambient pressure and RPM.
d.
Throttle position, ambient temperature, ambient pressure, but not RPM.
The correct answer is: Throttle position, ambient temperature, ambient pressure and RPM.
55
Due to the decrease in density associated with altitude
a.
the mixture needs to be enrichened to compensate for the power loss
b.
the mixture needs to be leaned
c.
the throttle needs to be closed to maintain best fuel/air ratio
d.
the fuel octane rating increases
The correct answer is: the mixture needs to be leaned
56
A cylinder has a Compression Ratio of 5:1, if the total volume is 1500cc, the swept volume will be:
a.
300cc
b.
6000cc
c.
1200cc
d.
1800cc
The correct answer is: 1200cc
57
Following a fuel drain the presence of water in AVGAS can be determined by
a.
looking for a demarcation line where the fuel will float to the top of the water
b.
looking for a colour change in the fuel
c.
looking for a demarcation line where the water will float to the top of the fuel
d.
the absence of a fuel smell in the drain container
The correct answer is: looking for a demarcation line where the fuel will float to the top of the water
58
In a Turbocharged Aircraft, as it climbs above Critical Altitude, what happens to the engine power output?
a.
No additional power is available and the aircraft can only climb a few hundred feet higher
b.
Begins to decreases as it does for a normally aspirated engine
c.
None of these
d.
No additional power is available and the aircraft cannot climb ay higher
The correct answer is: Begins to decreases as it does for a normally aspirated engine
59
In the Southern Hemisphere, when accelerating on a Westerly Heading a Magnetic compass will indicate
a.
An apparent turn to the North
b.
True North
c.
Correctly
d.
An apparent turn to the South
The correct answer is: An apparent turn to the South
60
A Spark which occurs at 20 degrees BTDC is :
a.
More retarded than one at 19 degrees BTDC
b.
More Advanced than one at 25 degrees BTDC
c.
More Advanced than one at 10 degrees BTDC
d.
More Retarded than one at 10 degrees BTDC
The correct answer is: More Advanced than one at 10 degrees BTDC
61
An aircraft has a fixed pitch propeller and a constant power setting. As the aircraft climbs:
a.
Blade angle will change and RPM will decrease.
b.
Angle of attack will change and RPM will be constant.
c.
Angle of attack will change and RPM will decrease.
d.
Blade angle will change and RPM will be constant.
The correct answer is: Angle of attack will change and RPM will decrease.
62
At 6000 ft the pitot becomes blocked, but the static vent is still clear. On descent VSI shows
a.
higher than actual ROD
b.
lower than actual ROD
c.
zero
d.
correct ROD
The correct answer is: correct ROD
63
After Engine Startup, an aircraft with a center zero ammeter will show:
a.
a constant low value
b.
a constant high value
c.
a small value which then increases to a high value
d.
A high value which then decreases to a low value
The correct answer is: A high value which then decreases to a low value
64
The purpose of the voltage regulator is to
a.
provide a constant current flow from the generator with changes of generator speed
b.
maintain a steady generator voltage with changes of generator speed
c.
monitor the battery voltage to warn of possible generator failure
d.
regulate the amount of current supplied by the battery to operate the generator
The correct answer is: maintain a steady generator voltage with changes of generator speed
65
When the inlet valve is closed after BDC in a 4-stroke engine, the maximum quantity of Fuel Air charge entering the cylinder is ensured. This modification to the valve timing is known as:
a.
valve overlap
b.
valve lead
c.
inlet valve lead
d.
valve lag
The correct answer is: valve lag
66
For its operation, the VSI senses:
a.
rate of change of static pressure
b.
dynamic pressure
c.
rate of change of dynamic pressure
d.
static pressure
The correct answer is: rate of change of static pressure
67
An aircraft is parked on a strip with the engine stopped. If the elevation of the strip is 2000ft above mean sea level, what would be the manifold pressure gauge be expected to read
a.
approximately 30 inHg
b.
approximately 1013 hPa
c.
approximately 28 inHg
d.
approximately 25 inHg
The correct answer is: approximately 28 inHg
68
During the Compression and Power strokes of a theoretical 4-stroke cycle
a.
Both valves remain open,on a horizontally opposed engine,
b.
The Inlet valve closes
c.
the Exhaust valve remains closed
d.
both valves remain open
The correct answer is: the Exhaust valve remains closed
69
Exhaust Back Pressure reduces the power developed in the cylinder of a piston engine because it:
a.
Reduces the Compression Ratio
b.
Reduces the Volumetric Efficiency
c.
Reduces the Thermal Efficiency
d.
Reduces the density of the Fuel/Air charge
The correct answer is: Reduces the Volumetric Efficiency
70
What is the purpose of the ball in the Turn and Slip Indicator or Turn Coordinator?
a.
The ball indicates rate of turn
b.
The ball indicates angle of bank
c.
The ball indicates slip and/or skid
d.
The ball indicates rate of descent in a turn
The correct answer is: The ball indicates slip and/or skid
71
In a piston engine the device which determines when and how the valves are opened is
a.
the timing chain
b.
the cam shaft
c.
the valve springs
d.
the crank shaft
The correct answer is: the cam shaft
72
An accelerator pump is used to prevent a flat spot. A flat spot arises:
a.
When the throttle is opened quickly and the mixture becomes temporarily too weak
b.
When the throttle is closed and the mixture becomes temporarily too rich
c.
When the throttle is closed quickly and the engine is starved of fuel
d.
When the throttle is opened quickly and the mixture becomes temporarily too rich
The correct answer is: When the throttle is opened quickly and the mixture becomes temporarily too weak
73
What will an Automatic Wastegate in a Turbocharging system act to prevent?
a.
Excessive MAP if the aircraft is operating below its Critical Altitude
b.
Excessively high RPM values
c.
Excessive MAP if the aircraft is operating above its Critical Altitude
d.
Excessively low RPM values
The correct answer is: Excessive MAP if the aircraft is operating below its Critical Altitude
74
Which of the following determines the temperature rise of the charge during the compression stroke of a piston engine
a.
the power rating of the engine
b.
the compression ratio
c.
the octane rating of the fuel
d.
the use of carburettor heat
The correct answer is: the compression ratio
75
What is the aircraft structural limit speed:
a.
VNE
b.
VB
c.
VNO
d.
VA
The correct answer is: VNE
76
A cylinder head temperature gauge is usually connected to
a.
the engine crank case
b.
one cylinder only
c.
the exiting exhaust gases
d.
all cylinders to obtain an av
The correct answer is: one cylinder only
77
The static system becomes blocked during cruise and the pilot selects alternate static. Which instruments will be less accurate?
a.
the DG and ASI
b.
the Altimeter, VSI and ASI
c.
the VSI and AH
d.
the ASI
The correct answer is: the Altimeter, VSI and ASI
78
Detonation in an aeroplane engine occurs:
a.
only when the ignition system is defective.
b.
after the ignition spark occurs.
c.
before normal ignition.
d.
only when running on one magneto.
The correct answer is: after the ignition spark occurs.
79
Selecting a lower rpm, using a constant-speed propeller:
a.
will allow the counterweight forces to coarsen the blade angle.
b.
will cause the blade angle to reduce.
c.
will use the CTM force to increase the blade angle.
d.
will cause the piston to move to the top of the cylinder.
The correct answer is: will allow the counterweight forces to coarsen the blade angle.
80
One of the limitations applying to increased RPM for increasing power in piston engine is;
a.
High Oil Pressure
b.
Excessive Propeller Tip Speed
c.
High Fuel consumption
d.
High Cylinder Head Temperature
The correct answer is: Excessive Propeller Tip Speed
81
Which of the following is a limitation of the directional gyro?
a.
the directional gyro reads incorrectly during turns
b.
the directional gyro does not automatically line up with north, it must be set by reference to a compass
c.
the directional gyro wobbles about in turbulent conditions
d.
the directional gyro is more difficult to read accurately
The correct answer is: the directional gyro does not automatically line up with north, it must be set by reference to a compass
82
The viscosity of an oil is a measure of
a.
the oils ability to flow
b.
the oils detergent properties
c.
the oils resistance to flow
d.
the temperature at which it will burn
The correct answer is: the oils resistance to flow
83
The conditions most likely to produce the highest engine power are:
a.
Cold air at high pressure with high relative humidity.
b.
Warm air at low pressure with high relative humidity.
c.
Cold and dry air at high pressure.
d.
Warm and dry air at high pressure.
The correct answer is: Cold and dry air at high pressure.
84
One effect of a blocked static source on aircraft instruments would be
a.
the airspeed indicator under reading on descent
b.
the airspeed indicator over reading on descent
c.
the vertical speed indicator over reading on climb
d.
the altimeter reads zero
The correct answer is: the airspeed indicator over reading on descent
85
The upper speed end of the green arc on the ASI indicates:
a.
VSO
b.
VS1
c.
VFE
d.
VNO
The correct answer is: VNO
86
The thermal efficiency of a piston engine is about:
a.
70 percent
b.
80 percent
c.
30 percent
d.
50 percent
The correct answer is: 30 percent
87
In the Southern Hemisphere, the heading indicated by the direct-reading magnetic compass will lead an aeroplanes actual heading when turning through north. If we wish to make a turn on the direct reading compass we must:
a.
Overshoot north, undershoot south.
b.
Undershoot an easterly heading.
c.
Always overshoot a westerly heading.
d.
Turn only at 10 degrees bank or less
The correct answer is: Overshoot north, undershoot south.
88
What is the maximum manifold pressure available to a normally aspirated engine while it is operating? .
a.
A setting equal to static pressure.
b.
A setting slightly below static pressure.
c.
A setting much lower than static pressure.
d.
A setting slightly above static pressure
The correct answer is: A setting slightly below static pressure.
89
Spark plug fouling would be most likely during
a.
cruising flight in cold weather
b.
operation in conditions where carburettor ice is likely to form
c.
long periods of ground operation at low power
d.
climbs at high power settings
The correct answer is: long periods of ground operation at low power
90
During cruise you suspect that carburettor ice is forming and apply full carburettor heat. The engine immediately loses power and begins to run roughly. Your immediate action should be
a.
open the throttle
b.
close the throttle
c.
leave carburettor heat full on
d.
place carburettor heat to off
The correct answer is: leave carburettor heat full on
91
A piston engine may use a fuel of a different grade than the recommended:
a.
Never
b.
Provided that the grade is higher
c.
Provided that it is an aeronautical petrol
d.
Provided that the grade is lower
The correct answer is: Provided that the grade is higher
92
Priming an engine for start ensures:
a.
The oil level is correct.
b.
The spark occurs at the correct time
c.
Enough fuel is available in the inlet manifold.
d.
Enough air is available in the manifold.
The correct answer is: Enough fuel is available in the inlet manifold.
93
As the contact breaker points open
a.
primary voltage goes to the distributor rotor
b.
primary voltage goes to the capacitor
c.
primary current goes to the secondary coil
d.
secondary voltage goes to the distributor rotor
The correct answer is: secondary voltage goes to the distributor rotor
94
Advanced ignition timing with an impulse coupling magneto
a.
Will reduce the risk of detonation.
b.
is used when starting an engine.
c.
Improves engine volumetric efficiency.
d.
Occurs after an engine has started.
The correct answer is: Occurs after an engine has started.
95
The vertical gyro in the attitude indicator is sensitive in:
a.
pitch and yaw
b.
pitch and roll
c.
yaw and roll
d.
pitch only
The correct answer is: pitch and roll
96
Fixed-pitch propellers are usually designed for maximum efficiency at:
a.
Idling
b.
Cruising speed
c.
Full throttle
d.
Take-off
The correct answer is: Cruising speed
97
The effect of ice formation in the carburettor is more severe at ?
a.
rich mixture settings
b.
cruise power settings
c.
high altitudes
d.
idle power settings
The correct answer is: idle power settings
98
In an engine fitted with a constant speed propeller, the presence of induction icing may be verified by applying carburettor heat and noting an immediate:
a.
Increase in MAP, with no further change.
b.
Decrease in MAP, then a gradual increase.
c.
Increase in MAP, then a gradual decrease.
d.
Decrease in MAP, with no further change
The correct answer is: Decrease in MAP, then a gradual increase.
99
Which statement is true regarding icing in the induction system?
a.
Throttle ice is usually formed in the induction system of fuel-injection engines.
b.
Fuel ice is usually formed in the induction system of fuel-injection engines.
c.
Induction system icing affects only engines equipped with carburettors.
d.
Impact ice affects fuel-injection engines and engines equipped with carburettors.
The correct answer is: Impact ice affects fuel-injection engines and engines equipped with carburettors.
100
A left-zero ammeter is placed between the alternator and the bus bar. Immediately after start-up. the normal indication is:
a.
a continuous steady positive reading.
b.
a high positive reading to indicate recharging of the battery, reducing to a lesser positive reading to indicate only the current supplied to the electrical circuits once the battery is fully charged.
c.
a low positive reading followed by an increased positive reading once the battery is fully charged.
d.
zero.
The correct answer is: a high positive reading to indicate recharging of the battery, reducing to a lesser positive reading to indicate only the current supplied to the electrical circuits once the battery is fully charged.
101
Which of the following would be the most likely cause of a fluctuating engine oil pressure
a.
oil level is too low
b.
oil level is too high
c.
grade of oil is incorrect
d.
oil filter is clogged
The correct answer is: oil level is too low
102
What change occurs in the fuel/air mixture when carburettor heat is applied?
a.
The air/fuel mixture becomes leaner
b.
The air/fuel mixture becomes richer
c.
The mixture remains unchanged
d.
Leaner mixture followed by a decrease in RPM
The correct answer is: The air/fuel mixture becomes richer
103
What could a failure of the engine oil supply to a Wastegate result in?
a.
may cause upper deck pressure to increase
b.
would reduce the throttle valve opening
c.
could cause a loss of manifold pressure
d.
would fully close the wastegate
The correct answer is: could cause a loss of manifold pressure
104
Magnetos are checked on an aircraft fitted with CSU by checking for
a.
a change in MP with the pitch full fine
b.
a change in RPM with the pitch in full fine
c.
a change in MP with the pitch in full coarse
d.
a change in RPM with the pitch in full coarse
The correct answer is: a change in RPM with the pitch in full fine
105
The purpose of an Thermal oil cooler bypass is
a.
to return overheated oil to the cooler
b.
to prevent the oil from becoming too hot
c.
to allow oil to bypass the cooler if the cooler becomes blocked
d.
to prevent oil from passing through the cooler if it is still cold
The correct answer is: to prevent oil from passing through the cooler if it is still cold
106
During flight at 7000 feet, the pitot tube becomes blocked with ice. The pilot later commences a descent to 3000 feet. The pressure instruments effected will be:
a.
The ASI, Altimeter and VSI all under reading
b.
The ASI over reading, and the Altimeter and VSI normal
c.
The ASI, Altimeter and VSI all over reading
d.
The ASI under reading, and the Altimeter and VSI normal.
The correct answer is: The ASI under reading, and the Altimeter and VSI normal
107
Increasing power on an engine having a variable pitch propeller you first
a.
Enrich the mixture, open the throttle, then increase the RPM
b.
Enrich the mixture, increase the RPM, then open the throttle
c.
Enrich the mixture, open the throttle, then decrease the RPM
d.
It makes no difference which is increased first
The correct answer is: Enrich the mixture, increase the RPM, then open the throttle
108
If the manifold pressure is increased, the blade angle of a constant speed propeller :
a.
Will increase and after a short time will reduce
b.
Will remain the same
c.
Will reduce so that the engine rpm can increase
d.
Will increase.
The correct answer is: Will increase.
109
Which of the following statements correctly defines propeller efficiency?
a.
The difference between geometric pitch and effective pitch
b.
The actual distance a propeller advances in one revolution.
c.
The ratio of thrust horsepower to brake horsepower
d.
The ratio of brake horsepower to thrust horsepower.
The correct answer is: The ratio of thrust horsepower to brake horsepower
110
The battery voltage is designed to be:
a.
slightly above the aircraft system voltage
b.
volts for all aircraft
c.
the same as the system voltage
d.
just below the system voltage
The correct answer is: just below the system voltage
111
An early indication of loss of oil quantity may be
a.
Oil Pressure graduallydecreasing
b.
Oil Pressure suddenly decreasing and Oil Temperature suddenly increasing
c.
Oil Temperature gradually increasing
d.
Oil Temperature gradually decreasing
The correct answer is: Oil Temperature gradually increasing
112
Which instrument gives an indication of the degree of power being produced by an engine fitted with CSU.
a.
tachometer
b.
exhaust gas analyser
c.
power indicator
d.
manifold pressure gauge
The correct answer is: manifold pressure gauge
113
When will a turbocharged engine’s wastegate be fully closed?
a.
Well below Critical Altitude.
b.
Well above the Critical Altitude
c.
Above the Critical Altitude.
d.
At the Critical Altitude.
The correct answer is: At the Critical Altitude.
114
The instrument vacuum pump is used to:
a.
Supply air to the pressure instruments.
b.
Provide a vacuum for the MAP gauge.
c.
Supply a vacuum to the VSI.
d.
Spin the rotors of the gyroscopic instruments
The correct answer is: Spin the rotors of the gyroscopic instruments
115
The venturi in the choke tube of a carburettor provides the means of
a.
increasing the manifold pressure
b.
reducing pressure to draw in the fuel
c.
manually adjusting the mixture
d.
cooling the mixture before induction
The correct answer is: reducing pressure to draw in the fuel
116
What is the type of structure that has most of its strength in its outer skin, but supports this skin with stringers across the formers?
a.
Monocoque structure
b.
Semi Monocoque structure
c.
stringer structure
d.
reinforced shell structure
The correct answer is: Semi Monocoque structure
117
If airflow to the oil cooler is interrupted by an obstruction in the duct
a.
oil temperature and oil pressure will both fall
b.
oil temperature and oil pressure will rise
c.
oil temperature will drop and oil pressure will rise
d.
oil temperature will rise and oil pressure will fall
The correct answer is: oil temperature will rise and oil pressure will fall
118
With the QNH correctly set on the altimeter sub-scale, the altimeter will indicate:
a.
Height above the airfield.
b.
Density height.
c.
Altitude.
d.
Pressure height.
The correct answer is: Altitude.
119
If the pitot tube and drain hole become blocked by ice, on the descent the airspeed indicator will:
a.
under read
b.
freeze in its present position
c.
over read
d.
read correctly
The correct answer is: under read
120
An air cooled engine, compared with a liquid cooled engine
a.
runs hotter at higher altitudes due to air being less dense
b.
is more streamlined, causing less drag
c.
has a higher power-weight ratio
d.
is quieter
The correct answer is: has a higher power-weight ratio
121
On a colour coded ASI, the Maximum Landing Gear Operating Speed (VLE) is
a.
marked at the end of a green arc
b.
Marked by a red radial
c.
marked at the end of the white arc
d.
Not marked
The correct answer is: Not marked
122
The clearance volume of a cylinder:
a.
is that area above the piston at TDC
b.
refers to the distance between TDC and BDC
c.
is not considered in the compression ratio
d.
varies with engine RPM
The correct answer is: is that area above the piston at TDC
123
If, while an aircraft is descending, the static vent leading to the Vertical Speed Indicator becomes blocked, the indicator will
a.
continue to show the same reading
b.
show a zero reading, after a short delay
c.
indicate a climb
d.
indicate a descent
The correct answer is: show a zero reading, after a short delay
124
The direct reading compass would be assessed as serviceable if: (i)only small bubbles are present. (ii) there is no physical damage, such as cracked glass. (iii) the liquid is not significantly discoloured.
a.
(i) and (ii) only are true
b.
all are true
c.
(i) and (iii) only are true
d.
(ii) and (iii) only are true
The correct answer is: (ii) and (iii) only are true
125
The cylinder head and oil temperatures may exceed their normal operating ranges if:
a.
A lower octane rating than specified for the engine is used
b.
A higher octane rating than specified for the engine is used.
c.
The engine is operated at a higher than normal oil pressure.
d.
The engine is operated at a too rich mixture.
The correct answer is: A lower octane rating than specified for the engine is used
126
It is the pilots intention to turn left from 080 degrees M to 010 degrees M at a position in the southern hemisphere. If the turn is carried out on the compass, the wings should be levelled when the compass reads :
a.
340 degrees
b.
020 degrees
c.
010 degrees
d.
040 degrees
The correct answer is: 340 degrees
127
By varying the current in an alternator field winding
a.
the alternator output is converted from AC to DC current
b.
generator current terminal resistance is reduced
c.
current flow to and from the alternator is altered
d.
the alternator output current flow is varied
The correct answer is: the alternator output current flow is varied
128
If the specified grade of fuel for your piston engined aircraft is not available, then you
a.
may use the next higher grade of fuel on an occasional basis
b.
may not refuel
c.
may use the next lower grade of fuel on an occasional basis
d.
may use Turbine fuel
129
What could be the result if the take-off manifold pressure exceeds rated boost in a turbo-charged engine?
a.
the engine will back-fire and lose power
b.
detonation and engine damage could result
c.
fuel vaporisation will occur
d.
cylinder head temperatures will become too low and power will be less than normal
The correct answer is: detonation and engine damage could result
130
The term Brake Horsepower refers to:
a.
power available at the prop shaft
b.
the ratio of possible to actual horsepower
c.
the overall efficiency of an engine
d.
FHP + IHP expressed as a percentage
The correct answer is: power available at the prop shaft
131
The purpose of ignition shielding is to
a.
provide a return to earth for the ignition system
b.
eliminate radio interference
c.
protect the wiring from oil and corrosion
d.
protect the engine in a severe electrical storm
The correct answer is: eliminate radio interference
132
During flight, the pilot notices the oil pressure is fluctuating between minimum and normal. The most likely cause and action would be:
a.
A faulty cooler thermostatic valve, which should be reported
b.
The oil pump relief valve stuck closed, which should be reported
c.
A faulty instrument, thus no action required
d.
Low oil quantity, requiring an immediate landing
The correct answer is: Low oil quantity, requiring an immediate landing
133
Explosive , spontaneous combustion in the cylinders is called:
a.
post ignition
b.
pre-ignition.
c.
detonation.
d.
satisfactory combustion.
The correct answer is: detonation.
134
With regard to CHT and EGT gauges select the correct statement
a.
Neither EGT nor CHT gauges register rapid changes in combustion temperature.
b.
CHT and EGT gauges register rapid changes in combustion temperature in unison
c.
EGT gauges register rapid changes in combustion temperature faster than CHT gauges.
d.
CHT gauges register rapid changes in combustion temperature faster than EGT gauges.
The correct answer is: EGT gauges register rapid changes in combustion temperature faster than CHT gauges.
135
As speed increases the Thrust of a fixed pitch propeller will:
a.
Decrease to a constant value
b.
Decrease initially and then increase
c.
Increase to a constant value
d.
Eventually decrease to zero
The correct answer is: Eventually decrease to zero
136
Symptoms of carburettor ice formation during level cruise include
a.
An increase in manifold pressure with a decrease in IAS
b.
An decrease in manifold pressure with a decrease in IAS
c.
An increase in exhaust gas temperature with no change in IAS
d.
An decrease in exhaust gas temperature with no change in IAS
The correct answer is: An decrease in manifold pressure with a decrease in IAS
137
If an artificial horizon becomes toppled during flight
a.
it must be manually adjusted before further use
b.
it will remain serviceable but will take time to re-erect itself
c.
it will require maintenance after landing
d.
it will remain unserviceable during the rest of the flight
The correct answer is: it will remain serviceable but will take time to re-erect itself
138
The load capacity of a battery is measured in
a.
Amps
b.
AMP-HR
c.
Volts
d.
Ohms
The correct answer is: AMP-HR
