Test Review

Question 1

What is an advantage of a wet style vacuum pump in a pneumatic deicing system?

Answer 1

More durable

Question 2

What is required when using exhaust shroud heating systems

Answer 2

Co monitor in the cockpit

Question 3

How is Freon measured into a system?

Answer 3

Weight

Question 4

What must you do before servicing freon system that has leaked out completely

Answer 4

Must be Evacuated

Question 5

What are the pump vanes made of in a dry pump pneumatic de-icing system

Answer 5

Carbon

Question 6

What is the most common type of heater in single-engine light aircraft

Answer 6

Exhaust shroud

Question 7

What color is Type I de-icing fluid

Answer 7

Orange

Question 8

A hydrostatic test pressure checks a cylinder to what pressure

Answer 8

5-3

Question 9

What two components divide the high side from low side in a vapor cycle air conditioning system

Answer 9

Compressor
expansion valve

Question 10

What kind of ice is formed from small droplets of water, is light weight and is easily removed

Answer 10

Rime ice

Question 11

What may be a result of a negative pressure situation

Answer 11

Structural damage

Question 12

What freon system utilized quick disconnect type couplings for servicing

Answer 12

R134

Question 13

How is an oxygen candle shut off

Answer 13

Not possible once ignited

Question 14

What do you use to thaw a frozen engine compressor

Answer 14

Hot air

Question 15

How is air moved through the air cycle primary heat exchanger when on the ground

Answer 15

Fan

Question 16

What engages and disengages a freon compressor from turning

Answer 16

Electromagnetic clutch

Question 17

How do you check if your turbine engine compressor is frozen

Answer 17

Manually try to spin the engine fan

Question 18

How is heat output regulated in a combustion heater system

Answer 18

Thermostat opens/closes fuel solenoid valve

Question 19

The boiling point is dependent upon what

Answer 19

Pressure
Green deicing fluid
Type 4

Question 20

What are low pressure oxygen lines made of

Answer 20

aluminum

Question 21

Why is there a conductive neoprene outer layer on wing pneumatic de-icing boots

Answer 21

Dissipate static electricity

Question 22

If all freon is lost, service the system to ___ PSI with freon and check for leaks

Answer 22

50

Question 23

The maximum cabin differential pressure of an aircraft is dictated by what

Answer 23

Aircraft design limits

Question 24

What kind of ice is formed from large drops of water and forms heavy sheets that are difficult to remove

Answer 24

Clear ice

Question 25

What is one way to tell if a vapor cycle air conditioning system does not leak

Answer 25

Holds a vacuum

Question 26

What is the job of the compressor in a vapor cycle air conditioning system

Answer 26

Turn low pressure freon vapor into high pressure freon vapor

Question 27

What type of heat energy raises actual substance temperature

Answer 27

Sensible heat energy

Question 28

What color are pressurized oxygen bottles used in aviation

Answer 28

Green

Question 29

Conductive tapes, blankets and films are what type of anti-ice systems

Answer 29

Thermal electric

Question 30

All pressurization systems have what feature for override

Answer 30

Manual mode

Question 31

What can be an issue with pressurized cabin aircraft

Answer 31

Metal fatigue

Question 32

What is the effect of low doses of carbon monoxide over long periods of time

Answer 32

Death

Question 33

In what component of a vapor cycle air condition system does freon convert from a vapor to a liquid?

Answer 33

Condenser

Question 34

Where is lubricating oil stored and serviced in a vapor cycle air conditioning system

Answer 34

Crank case compressor

Question 35

What happens when you combine petroleum with oxygen

Answer 35

Creates heat

Question 36

What is NOT a cause of icing on the evaporator external surface of a vapor cycle air conditioning system

Answer 36

Low freon

Question 37

Soapy water can be used to detect from leaks....

Answer 37

True

Question 38

What holds a pneumatic de-icing boot tight against the wing surface

Answer 38

Vacuum

Question 39

A compound gauge on a manifold gauge set will measure what

Answer 39

Pressure and vacuum

Question 40

What is a typically desirable rate-of-change for cabin pressure

Answer 40

300 to 500 ft/min

Question 41

What mode of cabin pressurization maintains cabin pressure at a set differential psi

Answer 41

Constant differential pressure mode

Question 42

Temperatures below what is required to change freon from a vapor to a liquid is called what

Answer 42

Subcooling

Question 43

What regulates bleed air into the air cycle system

Answer 43

Pack valve

Question 44

What uses the venturi effect to aid air volume into the cabin for pressurization

Answer 44

Jet pump multiplier

Question 45

How do the ratios of gasses change with elevation

Answer 45

No change

Question 46

What is a disadvantage of using a supercharger or turbocharger for cabin pressurization

Answer 46

Takes power from the engine

Question 47

How does a chemical deice system work?

Answer 47

Lowers freeze point of water

Question 48

In what type of aircraft would you find a wet type vacuum pump for de-icing

Answer 48

Older

Question 49

When would a system evacuation not be required during servicing

Answer 49

If the system pressure never dropped below atmospheric pressure