Position and Warning Systems

Question 1

An antiskid system is designed to

Answer 1

sense the declaration rate of every main landing gear wheel and release then reapply pressure at a slightly lower value when a skid is detected

Question 2

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

Answer 2

relieves the hydraulic pressure on the brake

Question 3

An antiskid system is

Answer 3

an electrohydraulic system

Question 4

Antiskid braking systems are generally armed by

Answer 4

a switch in the cockpit

Question 5

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

Answer 5

Elevators, speed brake, flaps and stabilizer trim

Question 6

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

Answer 6

a thrust lever

Question 7

An airspeed indicator measures the differential between

Answer 7

pitot and static air pressure

Question 8

The angle of attack detector operates from differential between

Answer 8

pitot and static air pressure

Question 9

1. When an airplane is slowed below approximately 20 MPH, the anti skid 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

Answer 9

Both No.1 and No.2 are true

Question 10

In an antiskid system, wheel skid is detected by

Answer 10

an electrical sensor

Question 11

Which of the following functions does a skid control system perform?

Answer 11

Normal skid control, fail safe protection, locked wheel skid control, touchdown protection

Question 12

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

Answer 12

down and lock switch is open

Question 13

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

Answer 13

When wheel rotation decelerations indicates an impending skid

Question 14

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

Answer 14

both No.1 and No.2 is true

Question 15

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

Answer 15

trim position

Question 16

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

Answer 16

negative air pressure (-ve)

Question 17

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

Answer 17

is imminent

Question 18

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

Answer 18

Landing gear not locked down and throttle retarded

Question 19

Where is the landing gear safety switch usually located?

Answer 19

On the main gear shock strut

Question 20

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

Answer 20

Ground safety switch

Question 21

Which repair would require a landing gear retraction test?

Answer 21

Gear downlock microswitch

Question 22

How long should a leak check be performed for after repairing an aircraft float?

Answer 22

24 hours

Question 23

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

Answer 23

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

Question 24

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

Answer 24

sequence valves

Question 25

What landing gear warning devices is/are incorporated on retractable landing gear aircraft?

Answer 25

A horn or other aural devices and a red warning light

Question 26

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

Answer 26

Antiskid system

Question 27

The rotor in a Autosyn remote indicating system uses

Answer 27

an electromagnet

Question 28

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

Answer 28

rotor

Question 29

The rotor in a Magnesyn remote indicating system uses

Answer 29

a permanent magnet

Question 30

Microswitches are used primarily as limit switches to

Answer 30

control electrical units automatically

Question 31

Which of the following are uses for dc selsyn system?

Answer 31

Indicated position of retractable landing gear, cowl flap position, cooler down position, fuel quantity and position of the flaps

Question 32

1. A DC selsyn system is 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

Answer 32

Both No.1 and No.2 are true