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103 Instruments and Fire Protection Flashcards | StudBud
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103 Instruments and Fire Protection
103 Instruments and Fire Protection
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1
Where may a person look for the information necessary to determine the required markings on an engine instrument?
2. Aircraft flight manual, 3. Instrument manufacturer's specifications.
1. Engine manufacturer's specifications, 4. Aircraft maintenance manual.
2. Aircraft flight manual, 4. Aircraft maintenance manual.
2
Determine the temperature range for a fire-extinguishing agent storage container with a pressure of 330 PSIG.
47 to 73°F.
47 to 71°F.
45 to 73°F.
3
The green arc on an aircraft temperature gauge indicates
a low, unsafe temperature range.
the desirable temperature range.
the instrument is not calibrated.
4
What method is used to detect the thermal discharge of a built-in fire-extinguisher system?
A rupture of the red plastic disk in the thermal discharge line.
The thermal plug missing from the side of the bottle.
A discoloring of the yellow plastic disk in the thermal discharge line.
5
An aircraft magnetic compass is swung to up-date the compass correction card when
equipment is added that could effect compass deviation.
the compass is serviced.
an annual inspection is accomplished on the aircraft.
6
What marking color is used to indicate if a cover glass has slipped?
Yellow.
White.
Red.
7
Cases for electrically operated instruments are made of
Bakelite or plastic cases.
Iron or steel cases.
Aluminum or composite cases.
8
The function of a symbol generator (SG) in an EFIS is to
display alphanumeric data and representations of aircraft instruments.
receive and process input signals from aircraft and engine sensors.
allow the pilot to select the appropriate system configuration.
9
Smoke in the cargo and/or baggage compartment of an aircraft is commonly detected by which instrument?
Sniffer.
Photoelectric cell.
Chemical reactor.
10
The thermocouple fire-warning system is activated by a
certain temperature.
rate-of-temperature rise.
core resistance drop.
11
Which procedure should you use if you find a vacuum-operated instrument glass loose?
Mark the case and glass with a slippage mark.
Replace the glass.
Install another instrument.
12
Aircraft instrument value should be marked and graduated in accordance with
both the aircraft and engine manufacturers' specifications.
the specific aircraft maintenance or flight manual.
the instrument manufacturer's specifications.
13
Two way check valves are required in what kind of system to prevent the agent from entering an empty cylinder.
Dry Powder System
Discharge System
Two-shot System
14
What is the color code for fire-extinguisher lines?
Red and green.
Yellow.
Brown.
15
The thermal switches of a bimetallic thermal-switch type fire-detection are connected in
series with each other, but in parallel with the indicator lights.
parallel with each other, and in parallel with the indicator lights.
parallel with each other, but in series with the indicator lights.
16
A Bourdon tube instrument may be used to indicate:1. pressure. 2. temperature. 3. position.
1.
1 and 2.
2 and 3.
17
Evidence that the system has been intentionally discharged is indicated by the absence of a
green disk on the side of the fuselage.
yellow disk on the side of the fuselage.
red disk on the side of the fuselage.
18
A thermocouple in a fire-detection system causes the warning system to operate because
it expands when heated and forms a ground for the warning system.
heat decreases its electrical resistance.
it generates a small current when heated.
19
How many of the following are controlled by gyroscopes?1. Attitude.2. Heading.3. Turn needle of the turn-and-slip.
Two.
One.
Three.
20
In what areas of aircraft would you find a carbon monoxide detector?
Lavatory and engine nacelle.
Cabin and cockpit.
Cargo and baggage compartment.
21
What occurs when a visual smoke detector is activated?
A lamp within the indicator illuminates automatically.
A warning bell within the indicator alarms automatically.
The test lamp illuminates and an alarm is provided automatically.
22
A radar altimeter determines altitude by
transmitting a signal and receiving back a reflected signal.
means of transponder interrogation.
receiving signals transmitted from ground radar stations.
23
Who is authorized to repair an aircraft instrument?
Still only number 3
3. A certificated repair station approved for that class instrument.
Absolutely number 3, not 1,2,3 and 4 or 3 and 4.
Only number 3
24
Which of the following is not a pneumatic type continuous loop system?
Fenwal
Systron-Donner
Lindberg
25
What is one of the basic mechanisms for sensing pressure?
Bernoulli Tube
Pitot Tube
Bourdon Tube
26
If an instrument static pressure line becomes disconnected inside a pressurized cabin during cruising flight?
The altimeter will read low and the airspeed indicator will read high.
The altimeter and airspeed indicator will both read high.
The altimeter and airspeed indicator will both read low.
27
A certificated mechanic with airframe and powerplant ratings may
perform minor repairs to aircraft instruments.
perform minor repairs and minor alterations to aircraft instruments.
not perform repairs to aircraft instruments.
28
An aircraft instrument panel is electrically bonded to the aircraft structure to
act as a restraint strap.
aid in the panel installation.
provide current return paths.
29
The most common cause of false fire warnings in continuous-loop fire-detection systems is
improper routing or clamping of loops.
moisture.
dents, kinks, or crushed sensor sections.
30
Which fire-extinguishing agent is considered to be the least toxic?
Bromotrifluoromethane (Halon 1301).
Bromochloromethane (Halon 1011).
Carbon dioxide.
31
A radar altimeter indicates
flight level (pressure) altitude.
altitude above sea level.
altitude above ground level.
32
The fire "T" handle shuts off
Fuel, electrical, bleed air, and hydraulic fluids at the fire "T" handle
The fuel, electrical, bleed air, and hydraulic fluids at the firewall.
The fuel, electrical, bleed air, and hydraulic fluids at the engine.
33
A barometric altimeter indicates pressure altitude when the barometric scale is set at
29.92" Hg.
14.7" Hg.
field elevation.
34
Resistance-type temp indicators using Wheatstone bridge or ratiometer circuits are used to indicate the temp in
1. Free air, 3. Carburetor air, 4. Coolant (engine), 5. Oil temperature.
1. Free air, 2. EGT, 3. Carburetor air, 6. CHT.
1. Free air, 2. EGT, 3. Carb air, 4. Coolant (engine), 5. Oil temp. 6. CHT.
35
The function of a display controller in an EFIS is to
display alphanumeric data and representations of aircraft instruments.
receive and process input signals from aircraft and engine sensors.
allow the pilot to select the appropriate system configuration.
36
On a periodic check of fire-extinguisher containers, the pressure was not between minimum and maximum limits.
Replace the extinguisher container.
Increase pressure if below limits.
Release pressure if above limits.
37
If a static pressure system check reveals excessive leakage, the leak(s) may be located by
pressurizing the system and adding leak detection dye.
removing and visually inspecting the line segments.
isolating portions of the line and testing each portion systematically.
38
When an aircraft altimeter is set at 29.92" Hg on the ground, the altimeter will read
density altitude.
field elevation.
pressure altitude.
39
How is a flangeless instrument case mounted in an instrument panel?
By a metal shelf separate from and located behind the instrument panel.
By four machine screws which extend through the instrument panel.
By an expanding-type clamp secured to the back of the panel.
40
When flags such as NAV, HDG, or GS are displayed on an HSI, the indication is
that function is operating.
to show deviation from the desired setting, or flight path, or heading, etc
that function is inoperative.
41
A contaminated carbon monoxide portable test unit may be returned to service by
cleaning the indicating element with soap and water.
removing the indicating element from the exposed area for 24 hours.
removing the indicating element and installing a new indicating element.
42
Aircraft instrument panels are generally shock-mounted to absorb
all vibration.
low-frequency, high-amplitude shocks.
high-frequency, high-amplitude shocks
43
Magnetic compass bowls are filled with a liquid to
retard precession of the float.
dampen the oscillation of the float.
reduce deviation errors.
44
Which of the following instruments will normally have range markings?
Cylinder head temperature gauge, airspeed indicator.
Altimeter, airspeed indicator.
Altimeter.
45
What must be done to an instrument panel that is supported by shock mounts?
The instrument mounts must be tightened to the specified torque.
The instrument mounts must be grounded to the aircraft structure.
Bonding straps must be installed across the instrument mounts.
46
Maximum altitude loss permitted during an unpressurized aircraft instrument static pressure system integrity check is
200 feet in 1 minute.
50 feet in 1 minute.
100 feet in 1 minute.
47
Turbine engine exhaust gas temperatures are measured by using
iron/constantan thermocouples.
chromel/alumel thermocouples.
ratiometer electrical resistance thermometers.
48
Portable carbon monoxide detectors containing yellow silica gel will turn which color?
Red.
Blue.
Green.
49
The proper fire-extinguishing agent to use on an aircraft brake fire is
carbon dioxide.
dry powder chemical.
water.
50
The function of a CRT in an EFIS is to
receive and process input signals from aircraft and engine sensors.
allow the pilot to select the configuration for the current flight needs.
display alphanumeric data and representations of aircraft instruments.
51
What fire detector is a bi-metallic switch set to go off at a specific temperature and is known as a spot type detector?
Kidde
Thermoswitch
Thermocouple
52
Maintenance of fire-detection systems includes the
replacement of damaged sensing elements.
servicing pressure type responder system.
repair of damaged sensing elements.
53
Why does the Fenwal fire-detection system use spot detectors wired parallel between two separate circuits?
A short may exist in either circuit without causing a false fire warning
A control unit is used to isolate the bad system in case of malfunction.
Installation is equal to two systems: a main system and a reserve system.
54
The red radial lines on the face of an engine oil pressure gauge indicates
minimum engine safe RPM operating range.
minimum precautionary safe operating range.
minimum and/ or maximum safe operating limits.
55
The requirements for testing and inspection of instrument static systems required by Section 91.411 are contained in
Type Certificate Data Sheets.
AC 43.13-1A.
Part 43, appendix E.
56
A synchro transmitter is connected to a synchro receiver
mechanically through linkage.
electromagnetically without wires.
electrically with wires.
57
Which instrument condition is acceptable and would not require correction?
8. Fogged.
5. Case paint chipped.
1. Red line missing.
6. Leaking at line B nut.
58
Which fire-detection system measures temperature rise compared to a reference temperature?
Lindberg continuous element.
Thermocouple.
Fenwal continuous loop.
59
A certificated mechanic with at least an airframe rating may perform
inspections and function checks on aircraft instruments.
major repairs to aircraft instruments.
minor internal repairs to aircraft instruments.
60
Smoke detectors that use a measurement of light transmissibility in the air are called
ultraviolet optical devices.
photoelectrical devices.
thermocouple devices.
61
(1) Aircraft instruments are color-coded to direct attention to operational ranges and limitations.
True
False
62
Flying instruments are known as the instruments used in controlling the aircraft's
Engine operating parameters
Flight path along a definite course
Flight attitude
63
When used in fire-detection systems having a single indicator light, thermal switches are wired in
series with each other and parallel with the light.
parallel with each other and in series with the light.
series with each other and the light.
64
Which of the following will cause inaccuracies in a magnetic compass and may be compensated for by an aircraft mechanic?
Deviation.
Variation.
Current.
65
Halogenated Hydrocarbons are used on what classes of fire?
C and D, limited on A and B
B and D, limited on A and C
B and C, limited on A and D
66
What is the fixed line mark attached to the compass bowl of a magnetic compass called?
Reeder line.
Lubber line.
Reference line.
67
Which instruments are connected to an aircraft's static pressure system only?
1. Vertical speed indicator, 3. Altimeter.
2. Cabin altimeter, 4. Cabin rate-of-change indicator, 5 Airspeed indicator
2. Cabin altimeter, 4. Cabin rate-of-change indicator.
68
Which circuit is not used in a Thermocouple system?
Alarm Circuit
Relay Circuit
Test Circuit
69
Aircraft temperature thermocouple leads may
not be altered and are designed for a specific installation.
be repaired using solderless connectors.
be installed with either lead to either post of the indicator.
70
Which of the following are fire precautions which must be observed when working on an oxygen system?
1, 2, 3, and 4.
1, 2, 3, and 4.
1, 2, 3, and 4.
1, 2, 3, and 4.
71
The types of fire-extinguishing agents for aircraft interior fires are
water, carbon tetrachloride, carbon dioxide, and dry chemical.
water, carbon dioxide, dry chemical, and halogenated hydrocarbons.
water, dry chemical, methyl bromide, and chlorobromomethane.
72
Smoke detection instruments are classified by their method of
construction.
detection.
maintenance.
73
Determine what pressure is acceptable for a fire extinguisher when the surrounding area temperature is 33°F.
215 to 302 PSIG.
215 to 301 PSIG.
214 to 301 PSIG.
74
Data transmitted between components in an EFIS are converted into
digital signals.
analog signals.
carrier wave signals.
75
If a fire extinguisher cartridge is removed from a discharge valve, it should be
used only on the original discharge valve assembly.
pressure checked.
replaced with a new cartridge.
76
Which of the following operating mechanisms would be found in a hydraulic pressure gauge?
Pressure diaphragm.
Bourdon tube.
Evacuated bellows.
77
When an unpressurized aircrafts pressure system is checked IAW 91.411, what instrument can be used in lieu of a tester
5. Airspeed indicator.
1. Vertical speed indicator or 5. Airspeed indicator.
2. Cabin altimeter or 4. Cabin rate-of-change indicator.
78
What type of fire detector uses dissimilar metals, uses heat to test, and is a rate of rise detector?
Kidde
Thermoswitch
Thermocouple
79
When installing an instrument in an aircraft, who is responsible for making sure it is properly marked?
The manufacturer of the instrument.
The mechanic installing the instrument.
The aircraft owner or pilot.
80
Which of the following instrument discrepancies could be corrected by an aviation mechanic?
3. Glass cracked, 4. Mounting screws loose, 5. Case paint chipped, and 6.
1. Red line missing, 4. Mounting screws loose, 6. Leaking at line B nut.
1. Red line missing, 4. Mounting screws loose, 5. Case paint chipped, and 6
81
At sea level, when the average atmospheric pressure is 14.7 PSI, the barometric pressure is
29.92 Mb.
29.92 Hg.
1013.25 Hg.
82
Built-in aircraft fire-extinguishing systems are ordinarily charged with
water and nitrogen.
Halogenated hydrocarbons and nitrogen.
carbon dioxide and nitrogen.
83
A squib, as used in a fire-protection system, is a
probe used for installing frangible disks in extinguisher bottles.
device for causing the fire-extinguishing agent to be released.
temperature-sensing device.
84
What does a reciprocating engine manifold pressure gauge indicate when the engine is not operating?
The differential between the manifold pressure and the atmospheric pressure
The existing atmospheric pressure.
Zero pressure.
85
AOA indicating system is based on detection of differential pressure at a point where the airstream flows in a direction
not parallel to the true angle of attack of the aircraft.
parallel to the angle of attack of the aircraft.
parallel to the longitudinal axis of the aircraft.
86
Instrument panel shock mounts absorb
high energy impact shocks caused by hard landings.
high G shock loads imposed by turbulent air.
low frequency, high-amplitude shocks.
87
The method of mounting aircraft instruments in their respective panels depends on the
design of the instrument case.
instrument manufacturer.
design of the instrument panel.
88
When performing the static system leakage check required by Section 91.411, the technician utilizes
positive pressure.
negative pressure.
static pressure.
89
Light refraction smoke detectors are activated when the detector
senses light reflected from smoke particles passing through a chamber.
measures a reduction in the visible or infrared light in the area.
uses radiation induced ionization to detect the presence of smoke.
90
How would an airspeed indicator be marked to show the best rate-of-climb speed (one engine inoperative)?
A red radial line.
A blue radial line.
A green arc.
91
Which condition would be most likely to cause excessive vacuum in a vacuum system?
Vacuum pump overspeed.
Vacuum relief valve spring weak.
Vacuum relief valve improperly adjusted.
92
The maximum deviation permitted in a magnetic direction indicator installed on an aircraft certificated under FAR 23 is
6°.
8°.
10°.
93
(2) Aircraft instruments range markings are not specified by Title 14 of the FARS but are standardized by manufacturer.
False
True
94
A turn coordinator instrument indicates
both roll and yaw.
the need for corrections in pitch and bank.
the longitudinal attitude of the aircraft during climb and descent.
95
What is used to isolate avionics equipment from vibrating structure?
Shock mounts
Lorde mounts
Shock absorbers
96
A fire-extinguisher container can be checked to determine its charge by
a hydrostatic test.
weighing the container and its contents.
attaching a remote pressure gauge.
97
The lubber line on a directional gyro is used to
represent the nose of the aircraft.
align the instrument glass in the case.
represent the wings of the aircraft.
98
Which instruments are connected to an aircraft's pitot-static system?
1. Vertical speed indicator, 2. Cabin altimeter, 3. Altimeter.
1. Vertical speed indicator, 3. Altimeter, 5. Airspeed indicator.
1. Vertical speed indicator, 2. Cabin altimeter, 4. Cabin rate-of-change.
99
Which of the following causes of aircraft magnetic compass inaccuracies may be compensated for by mechanics?
Deviation.
Magnetic compass current.
Variation.
100
The altimeter/Encoder inspection is due how often for aircraft flown under IFR?
36 months
12 months
24 months
101
A carbon dioxide (CO(2)) hand-held fire extinguisher may be used on an electrical fire if the
horn is nonmagnetic.
horn is nonmetallic.
handle is insulated.
102
Which statement regarding an aircraft instrument vacuum system is true?
Dry-type vacuum pumps with carbon vanes are very susceptible to damage.
Vacuum systems are more effective at high altitudes than + pressure systems
Vacuum instruments connected to a pressure manifold have instrument filters
