Pitot Static

Question 1

What are the two most critical factors of the atmosphere?

Answer 1

Temperature and pressure

Temperature is the most critical everything in the atmosphere chases it

Question 2

What is atmospheric pressure?

Answer 2

The force exerted by the weight of a column of air

Question 3

What is standard sea level pressure in inches of mercury?

Answer 3

29.92

Question 4

What is standard sea level temperature in degrees Celsius?

Answer 4

15 degrees

Question 5

What is standard temperature lapse rate with altitude?

Answer 5

2 degrees/ 1,000 feet

Question 6

A change in 1 inch of mercury pressure is approximately ___________ feet of altitude.

Answer 6

1,000

Question 7

Define impact pressure.

Answer 7

Static pressure plus dynamic pressure

Question 8

Define static pressure

Answer 8

Ambient pressure

Question 9

Which instruments depend on static pressure only?

Answer 9

VSI and Altimeter

Question 10

Which instrument depends on both impact and static pressure?

Answer 10

Airspeed indicator

Question 11

What pressures affect the pitot static system?

Answer 11

Dynamic and static

Question 12

Three types of airspeed

Answer 12

Indicated, calibrated, and true

Question 13

Indicated airspeed

Answer 13

Read from the dial on the face of the instrument

Question 14

Calibrated airspeed

Answer 14

IAS corrected for instrument and installation error

Question 15

True airspeed

Answer 15

CAS corrected for density error

Question 16

Three errors in airspeed indicator

Answer 16

Installation, density, and instrument

Question 17

Installation error

Answer 17

Caused by misalignment of the pitot tube with the relative wind and position of the static vents

Question 18

Density error

Answer 18

Caused by pressure and temperature changes, air less dense as altitude increases

Question 19

Instrument error

Answer 19

Caused by friction in the instrument

Question 20

Is the VSI a pressure differential measuring instruments?

Answer 20

yes

Question 21

Pressure used in the diaphragm of the VSI

Answer 21

Static

Question 22

Pressure used in the case of the VSI

Answer 22

restricted static

Question 23

How much time lag does the VSI have when leveling off from a climb or descent?

Answer 23

a few seconds

Question 24

The altimeter is a ____ with a Kollsman window to adjust for atmospheric pressure changes.

Answer 24

Aneroid barometer

Question 25

What does the setting knob on the altimeter change when it is turned?

Answer 25

Kollsman setting and position of the needles

Question 26

How would the altimeter react to a pressure increase while on the ramp and again in flight?

Answer 26

It would indicate a lower altitude on the ramp; the change would not be apparent in flight.

Question 27

How would the Kollsman window react to a pressure increase while on the ramp and again in flight?

Answer 27

No change in either

Question 28

A change of .15 inch of mercury pressure is equal to

Answer 28

150 feet

Question 29

Indicated altitude

Answer 29

Altimeter indication

Question 30

True altitude

Answer 30

Altitude above MSL

Question 31

Pressure Altitude

Answer 31

Altitude above the standard datum plane (29.92"Hg)

Question 32

Absolute altitude

Answer 32

Altitude above the terrain

Question 33

Altimeter setting

Answer 33

station pressure corrected to MSL

Question 34

Why is an altimeter setting necessary?

Answer 34

To correct for pressure changes

Question 35

Maximum allowable error in the altimeter

Answer 35

75' (FAA), aviators should check operator or maintenance manual to confirm accurate limit for their aircraft.

Question 36

When flying into an area of lower pressure without resetting the altimeter, would your true altitude be higher or lower than your indicated altitude?

Answer 36

lower

Question 37

If you depart a base with an altimeter setting of 29.82 and an hour later receive a new altimeter setting of 30.22, how much higher or lower than true altitude would the altimeter indicate prior to adjusting the altimeter to the new setting?

Answer 37

400' lower than true altitude

Question 38

At the last reporting point, you corrected the altimeter by setting the Kollsman scale on 29.92." Hg. Prior to landing, you received a new setting of 29.80. What is your true altitude in relation to indicated altitude (before you reset the altimeter)?

Answer 38

120' lower than indicated altitude

Question 39

When flying into an area of higher pressure without resetting the altimeter, would your altimeter indicate higher or lower than your true altitude?

Answer 39

lower

Question 40

When flying into an area of colder than standard temperature, would the indicated altitude will be more or less than true altitude?

Answer 40

more

Question 41

What instrument stops functioning properly due to pitot icing?

Answer 41

airspeed indicator

Question 42

What is the recommended corrective action when the static system is clogged

Answer 42

switch to an alternate source or break the glass on the VSI

Question 43

(true or false) High DA and low air density mean nearly the same thing

Answer 43

true

Question 44

What causes density error?

Answer 44

Nonstandard pressure and temperature

Question 45

True airspeed

Answer 45

CAS corrected for density error