11.14 Lights

Question 1

What unit is used to measure luminous intensity?
A) Candles or candela
B) Lumens or lux
C) Watts

Answer 1

A) Candles or candela

Question 2

What does luminous intensity refer to?
A) The intensity of light in a given direction
B) The total amount of light emitted
C) The power consumption of a light source

Answer 2

A) The intensity of light in a given direction

Question 3

What unit is used to measure luminous flux?
A) Lumens
B) Candela
C) Watts

Answer 3

A) Lumens

Question 4

What does luminous flux represent?
A) The amount of light radiated by a light source per second
B) The direction of light emitted by a source
C) The energy efficiency of a light source

Answer 4

A) The amount of light radiated by a light source per second

Question 5

Why should you avoid touching a cool bulb with bare hands?
A) Grease and salts from the skin can weaken the aluminosilicate glass when baked during operation
B) It will cause the bulb to overheat immediately
C) It can short-circuit the electrical connection

Answer 5

A) Grease and salts from the skin can weaken the aluminosilicate glass when baked during operation

Question 6

What is one primary use of strobe lights on an aircraft?
A) Anti-collision lighting
B) Navigational guidance
C) Cabin illumination

Answer 6

A) Anti-collision lighting

Question 7

What determines the wavelength and color of light emitted by an LED?
A) The material of the LED
B) The voltage applied to the LED
C) The size of the LED

Answer 7

A) The material of the LED

Question 8

Where is the red navigation light on an aircraft visible?
A) From directly ahead round to 110° on the left side
B) From directly ahead round to 110° on the right side
C) From directly to the rear round to 70° left and right

Answer 8

A) From directly ahead round to 110° on the left side

Question 9

Where is the green navigation light on an aircraft visible?
A) From directly ahead round to 110° on the right side
B) From directly ahead round to 110° on the left side
C) From directly to the rear round to 70° left and right

Answer 9

A) From directly ahead round to 110° on the right side

Question 10

Where is the white navigation light on an aircraft visible?
A) From directly to the rear round to 70° left and right
B) From directly ahead round to 110° on the left side
C) From directly ahead round to 110° on the right side

Answer 10

A) From directly to the rear round to 70° left and right

Question 11

Where is the red navigation light located on an aircraft?
A) Left/Port wing tip
B) Right/Starboard wing tip
C) Tail

Answer 11

A) Left/Port wing tip

Question 12

Where is the green navigation light located on an aircraft?
A) Tail
B) Right/Starboard wing tip
C) Left/Port wing tip

Answer 12

B) Right/Starboard wing tip

Question 13

What is the normal rotational speed of a rotating beam lighting unit?
A) 40-45 RPM
B) 20-25 RPM
C) 60-65 RPM

Answer 13

A) 40-45 RPM

Question 14

What is the flash rate of a Grimes 28 Vdc rotating reflector beacon?
A) 60 flashes per minute
B) 40 flashes per minute
C) 80 flashes per minute

Answer 14

A) 60 flashes per minute

Question 15

What is the typical flashing frequency of strobe light units?
A) 60-70 flashes per minute
B) 30-40 flashes per minute
C) 80-90 flashes per minute

Answer 15

A) 60-70 flashes per minute

Question 16

What component do strobe light units use to store electrical charge for flashing?
A) Capacitors
B) Resistors
C) Transformers

Answer 16

A) Capacitors

Question 17

Where are logo lights often installed on an aircraft?
A) Upper surface of the horizontal stabilizer and/or inboard side of a fairing on the trailing edge of each wing
B) On the nose of the aircraft
C) On the landing gear

Answer 17

A) Upper surface of the horizontal stabilizer and/or inboard side of a fairing on the trailing edge of each wing

Question 18

Which alert has the highest priority and what color is it?
A) Warning - Red
B) Caution - Amber
C) Advisory - Cyan

Answer 18

A) Warning - Red

Question 19

Which alert is the second highest priority and what color is it?
A) Status - White
B) Caution - Amber
C) Advisory - Cyan

Answer 19

B) Caution - Amber

Question 20

Which alert has the third highest priority and what color is it?
A) Advisory - Cyan
B) Warning - Red
C) Status - White

Answer 20

A) Advisory - Cyan

Question 21

Which alert has the lowest priority and what color is it?
A) Caution - Amber
B) Status - White
C) Warning - Red

Answer 21

B) Status - White

Question 22

Where is the general cabin lighting normally controlled from?
A) Purser’s panel
B) Cockpit overhead panel
C) Flight attendant’s station

Answer 22

A) Purser’s panel

Question 23

When is power to the lighting circuits available?
A) Only when the cargo compartment door is completely open
B) When the cabin door is open
C) At all times during flight

Answer 23

A) Only when the cargo compartment door is completely open

Question 24

What are the three positions of the emergency lighting system switch?
A) OFF, ON, ARMED
B) LOW, MEDIUM, HIGH
C) START, STOP, PAUSE

Answer 24

A) OFF, ON, ARMED

Question 25

What does the storm light setting do? A) Brightens all the instruments to maximum brightness B) Turns off all instrument lights C) Dimms all the instruments to minimum brightness

Answer 25

A) Brightens all the instruments to maximum brightness

Question 26

What is the purpose of instrument lighting in the cockpit? A) To ensure instruments are readable without glare or reflection in all lighting conditions B) To decorate the cockpit for passengers C) To provide heating for the instruments

Answer 26

A) To ensure instruments are readable without glare or reflection in all lighting conditions