AIRCRAFT INSTRUMENT SYSTEM

Question 1

The operating mechanism of most hydraulic pressure gauges is _______.

Answer 1

Bourdon tube.

Question 2

What is the fixed line mark attached to the compass bowl of a magnetic compass
called?

Answer 2

Lubber line.

Question 3

When swinging a magnetic compass, the compensators are adjusted to correct
for______.

Answer 3

magnetic influence deviation

Question 4

The maximum deviation (during level flight) permitted in a compensated
magnetic direction indicator installed on an aircraft certificated under Federal
Aviation Regulation Part 23 is ____________.

Answer 4

10.

Question 5

Magnetic compass bowls are filled with a liquid to___________-.

Answer 5

dampen the oscillation of the float.

Question 6

The maximum altitude loss permitted during an unpressurized aircraft
instrument static pressure system integrity check is______

Answer 6

100 feet in 1 minute.

Question 7

When an aircraft altimeter is set at 29.92 inches Hg on the ground, the altimeter will
read_______________.

Answer 7

pressure altitude.

Question 8

When an aircraft altimeter is set at 29.92 inches Hg on the ground, the altimeter will
read_________.

Answer 8

pressure altitude.

Question 9

A turn coordinator instrument indicates________.

Answer 9

both roll and yaw.

Question 10

Thermocouple leads_________.

Answer 10

are designed for a specific installation and may not be altered.

Question 11

A synchro transmitter is connected to a synchro receiver__________.

Answer 11

electrically with wires.

Question 12

Fuel flow transmitters are designed to transmit data ___________.

Answer 12

electrically.

Question 13

Data transmitted between components in an EFIS are converted into_____.

Answer 13

digital signals.

Question 14

The function of a CRT in an EFIS is to_________ .

Answer 14

display alphanumeric data and representations of aircraft instruments.

Question 15

The function of a symbol generator (SG) in an EFIS is to _________.

Answer 15

receive and process input signals from aircraft and engine sensors and send the
data to the appropriate display.

Question 16

A radar altimeter determines altitude by___________.

Answer 16

transmitting a signal and receiving back a reflected signal.

Question 17

How would an airspeed indicator be marked to show the best rate of climb
speed (one engine inoperative)?

Answer 17

A blue radial line.

Question 18

What marking color is used to indicate if a cover glass has slipped?

Answer 18

white.

Question 19

Aircraft instruments should be marked and graduated in accordance
with____.

Answer 19

the specific aircraft maintenance or flight manual

Question 20

The method of mounting aircraft instruments in their respective panels
depends on the_____.

Answer 20

design of the instrument case.

Question 21

Cases for electrically operated instruments are made of_________ .

Answer 21

Iron or steel cases.

Question 22

When installing an instrument in an aircraft, who is responsible for
making sure it is properly marked?

Answer 22

The instrument installer.

Question 23

The red radial lines on the face of an engine oil pressure gauge
indicates_______.

Answer 23

minimum and/ or maximum safe operating limits.

Question 24

A certificated mechanic may perform__________.

Answer 24

100-hour inspections of instruments.

Question 25

An aircraft instrument panel is electrically bonded to the aircraft structure
to_________.

Answer 25

provide current return paths.

Question 26

When performing the static system leakage check required by Section 91.411, the
technician utilizes_____________.

Answer 26

negative pressure.

Question 27

If a static pressure system check reveals excessive leakage, the leak(s) may be
located by____________.

Answer 27

isolating portions of the line and testing each portion systematically, starting at
the instrument connections.

Question 28

The lubber line on a directional gyro is used to__________.

Answer 28

represent the nose of the aircraft.

Question 29

How is a flangeless instrument case mounted in an instrument panel?

Answer 29

By an expanding type clamp secured to the back oftie panel and
tightened by a screw from the front of the instrument panel.

Question 30

How would an airspeed indicator be marked to show the best rate of climb
speed (one engine inoperative)?

Answer 30

A blue radial line.