POSITION AND WARNING SYSTEM Flashcards

1
Q

The purpose of antiskid generators is to

A

measure wheel rotational speed and any speed changes

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2
Q

In a brake antiskid system, when an approaching skid is sensed, an electrical signal is sent to the skid
control valve which

A

relieves the hydraulic pressure on the brake

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3
Q

An antiskid system is

A

an electro hydraulic system

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4
Q

Antiskid braking systems are generally armed by

A

a switch in the cockpit

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5
Q

A typical takeoff warning indication system, in addition to throttle setting, monitors the position of
which of the following?

A

elevators, speed brake, flaps and stabilizer trim

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6
Q

The primary purpose of a takeoff warning system is to alert the crew that a monitored flight control is
not properly set prior to takeoff. The system is activated by

A

a thrust lever

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7
Q

(1) An airspeed indicator measures the differential between pitot and static air pressures surrounding
the aircraft at any moment of flight.
(2) An airspeed indicator measures the differential between pitot and cabin air pressures at any moment
of flight.
Regarding the above statements,

A

only no. 1 is true

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8
Q

The angle-of-attack detector operates from differential pressure when the airstream

A

is not parallel to the true angle of attack of the aircraft

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9
Q

(1) When an airplane is slowed below approximately 20 MPH, the antiskid system automatically
deactivates to give the pilot full control of the brakes for maneuvering and parking.
(2) An antiskid system consists basically of three components; wheel speed sensors, control box, and
control valves.
Regarding the above statements,

A

both no. 1 and no. 2 are true

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10
Q

In an antiskid system, wheel skid is detected by

A

an electrical sensor

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11
Q

Which of the following functions does a skid control system perform?
1. Normal skid control.
2. Normal braking.
3. Fail safe protection.
4. Locked wheel skid control.
5. Touchdown protection.
6. Takeoff protection.

A

1,3,4,5

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12
Q

In the air with the antiskid armed, current cannot flow to the antiskid control box because the landing
gear

A

squat switch is open

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13
Q

At what point in the landing operation does normal skid control perform its function?

A

when wheel rotation deceleration indicates an impending skid

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14
Q

(1) An antiskid system is designed to apply enough force to operate just below the skid point.
(2) A warning lamp lights in the cockpit when the antiskid system is turned off or if there is a system failure.
Regarding the above statements,

A

both no. 1 and no. 2 are true

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15
Q

When an airplane’s primary flight control surfaces are set for a particular phase of flight, such as landing or takeoff, the corresponding control-surface indicating system will show

A

trim position

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16
Q

The pneumatic (reed) type stall warning system installed in some light aircraft is activated by

A

negative air pressure

17
Q

Stall warning systems are generally designed to begin warning the pilot when a stall

A

is imminent

18
Q

(Refer to Figure 19.) What is the indication of the red landing gear position light under the following conditions?
Aircraft on jacks.
Landing gear in transit.
Warning horn sounding.

A

extinguished

19
Q

(Refer to Figure 19). Which repair should be made if the gear switch was placed in UP position and the gear does not retract?

A

replace electrical wire no. 12

20
Q

Which of the following conditions is most likely to cause the landing gear warning signal to sound?

A

landing gear not locked down and throttle retarded

21
Q

(Refer to Figure 20.) What will illuminate the amber indicator light?

A

closing the nose, left and right wheel gear full retract switches

22
Q

(Refer to Figure 20.) What is the minimum circumstance that will cause the landing gear warning horn to indicate an unsafe condition?

A

any gear not down and locked , and one throttle retarded

23
Q

Where is the landing gear safety switch usually located?

A

on the main gear shock strut

24
Q

What safety device is actuated by the compression and extension of a landing gear strut?

A

ground safety switch

25
Q

Which repair would require a landing gear retraction test?

A

gear downlock micro-switch

26
Q

Landing gear warning systems usually provide which of the following indications?

A

red light for unsafe gear, green light for gear down, no, light for gear up

27
Q

In most modern hydraulically actuated landing gear systems, the order of gear and fairing door operation is controlled by

A

sequence valves

28
Q

What landing gear warning device(s) is/are incorporated on retractable landing gear aircraft?

A

a horn or other aural device and a red warning light

29
Q

When a landing gear safety switch on a main gear strut closes at liftoff, which system is deactivated?

A

antiskid system

30
Q

The rotor in an autosyn remote indicating system uses

A

an electro magnet

31
Q

The basic difference between an autosyn and a magnesyn indicating system is the

A

rotor

32
Q

The rotor in a magnesyn remote indicating system uses

A

a permanent magnet

33
Q

Microswitches are used primarily as limit switches to

A

control electrical units automatically

34
Q

Which of the following are some uses for a dc selsyn system?
1. Indicates position of retractable landing gear.
2. Indicates the angle of incidence of an aircraft.
3. Indicates the altitude of an aircraft.
4. Indicates cowl flaps or oil cooler door position.
5. Indicates fuel quantity.
6. Indicates the rate of climb of an aircraft.
7. Indicates position of wing flaps.

A

1,4,5,7

35
Q

(1) A dc selsyn system is a widely used electrical method of indicating a remote mechanical movement
or position.
(2) A synchro-type indicating system is an electrical system used for transmitting information from one
point to another.
Regarding the above statements,

A

both no. 1 and no. 2 are true