13.9 Lighting Extra Questions

Question 1

A xenon flashtube anti-collision lamp assembly is supplied with 115V AC at 400 Hz. To operate correctly, the timer frequency and voltage output must be:

a) 400 Hz at 28V AC
b) 50 Hz at 450V DC
c) 60 Hz at 450V AC

Answer 1

50 Hz at 450V DC

Question 2

In some passenger information systems when the ‘no smoking’:

a) and ‘fasten seat belt’ circuits are energised, a high tone chime sounds
b) or ‘fasten seat belt’ circuits are de-energised, double high tone chime sounds
c) or ‘fasten seat belt’ circuits are energised or de-energised, a low tone chime sounds

Answer 2

Or ‘fasten seat belt’ circuits are energised or de-energised, a low tone chime sounds

Question 3

Photo-luminescent systems have been approved by the JAA for use in:

a) emergency floor path lighting, operational after 2 hours ‘charge time’
b) cabin exit signs, providing back-up battery is provided
c) overwing exit door frame

Answer 3

Emergency floor path lighting, operational after 2 hours ‘charge time’

Question 4

A self illuminating sign is reported damaged and is to be replaced. The correct replacement procedure includes:

a) ventilating the area and wearing an approved face mask to give protection against escaping gas
b) taping any cracks prior to removing securing screws before sealing in an approved plastic bag
c) wearing protective rubber gloves to protect against radioactive emissions before returning part to workshops

Answer 4

Ventilating the area and wearing an approved face mask to give protection against escaping gas

Question 5

On the initial installation of an anti-collision lamp assembly:

a) screened cable must be used to ensure fail safe operation
b) the control switch must be independent of the position light switch
c) the lamp must be connected to the primary bus

Answer 5

The control switch must be independent of the position light switch

Question 6

The electroluminescent form of lighting in some passenger information signs:

a) have a layer of phosphor sandwiched between two electrodes
b) are filled with tritium gas
c) refracts light between two wedges of tapered glass

Answer 6

Have a layer of phosphor sandwiched between two electrodes

Question 7

The starboard navigation light should be:

a) green, showing through an angle of 110°
b) green, showing through an angle of 70°
c) red, showing through an angle of 70°

Answer 7

Green, showing through an angle of 110°

Question 8

Anti collision lights of the strobe type:

a) use capacitor discharge tubes fitted with hydrogen gas
b) should be isolated electrically for at least five minutes before disconnecting any components
c) can damage the human eye because of the infrared emissions

Answer 8

Should be isolated electrically for at least five minutes before disconnecting any components

Question 9

When the passenger information signs control switch is in the AUTO position:

a) the ‘No Smoking’ and ‘Fasten Seatbelts’ signs are illuminated when the flaps are lowered
b) the ‘No Smoking’ sign is illuminated when the flaps are lowered
c) the ‘No Smoking’ sign and ‘Fasten Seatbelts’ signs are illuminated when the landing gear lever is placed in the down position

Answer 9

The ‘No Smoking’ signs and ‘Fasten Seatbelts’ signs are illuminated when the landing gear lever is placed in the down position

Question 10

The lamp which forms an angle of view through a dihedral angle of 110° seen to the left of an approaching aircraft is:

a) red
b) white
c) green

Answer 10

Green

Question 11

The lighting system which must have a single switch in a single circuit controlled by a circuit breaker is usually:

a) a high intensity strobe
b) position (navigation)
c) landing

Answer 11

Position (navigation)

Question 12

A reflector type anti collision lamp gives a split beam output, the curved reflector will provide a:

a) high intensity narrow pencil beam to increase the visible range
b) reduced intensity spread beam 30° above and below the horizon
c) reduced intensity narrow beam 70° laterally from the centreline

Answer 12

Reduced intensity spread beam, 30° above and below the horizon

Question 13

On inspection, a high intensity strobe lighting unit glass tube is found cracked, any leaking gas is likely to be:

a) argon
b) neon
c) xenon

Answer 13

Xenon

Question 14

The minimum intensity of a wing position light is:

a) 5 candela
b) 10 candela
c) 15 candela

Answer 14

5 candela

Question 15

In a pillar light, the light extends by what amount and at what angle?

a) 2” at 45°
b) 2” at 90°
c) 2” at 180°

Answer 15

2” at 90°

Question 16

The correct procedure for dealing with a damaged tritium light source is:

a) keep people away, ventilate, place in a radioactive marked container
b) clean, wash, de-contaminate
c) wear face mask, and use fine brush for debris removal

Answer 16

Keep people away, ventilate, place in a radioactive marked container

Question 17

A grain of wheat light would be found where:

a) in galley compartment
b) on light plates
c) door handles

Answer 17

On light plates

Question 18

Some self illuminating signs are filled with:

a) titanium hydroxide solution
b) tritium isotopic vapour
c) xenon gas

Answer 18

Tritium isotopic vapour

Question 19

The test switch in a typical emergency exit lights assembly is located on the:

a) emergency battery pack and operates the emergency lights for 1 minute
b) crew aft attention panel and operates the emergency lights for 1 minute
c) emergency battery pack and operates the emergency lights until the switch is selected off

Answer 19

Emergency battery pack and operates the emergency lights for 1 minute

Question 20

Emergency exit light electronic units automatically switches the lights on when the:

a) battery pack voltage drops to 4.8V
b) pilot’s switch is selected to armed and DC busbar power falls below 12V
c) pilot’s switch is selected to armed and DC busbar voltage falls to 20V ± 1.5V

Answer 20

Pilot’s switch is selected to armed and DC busbar power falls below 12V

Question 21

If the emergency lights should be left on for an excessive duration, the following action occurs automatically:

a) an EICAS/ECAM message and associated horn sound to alert crew/maintenance staff
b) automatic light turn off occurs after two minutes
c) automatic light turn off occurs when the battery pack voltage falls to 4.8V having given 15 minutes of light

Answer 21

Automatic light turn off occurs when the battery pack voltage falls to 4.8V having given 15 minutes of light