Lighting System Flashcards
What voltage does the Mercury Zenon bulb turn on.
50,000 volts
What lamp is used in flight deck and hangar bay areas and what color(s) is the lamp?
Low pressure sodium lamp and it’s yellow-orange.
A drawback of low pressure sodium lighting is the starting delay-time required to bring the lamp to full brilliance is called ______________?
LPS Starting Time
The restrike time of a light source is the time it takes for a lamp to return to full brilliance after being subjected to a momentary power loss is called _________________.
LPS restrike time
The minimum ampere requirement to run a VLA light is?
2 amps
How many wave off lights are installed on a cutter?
2
What are the 2 components/cards in a wave off light system?
Flasher card and monitor card
Characteristics of the vertical drop-line lights?
Aft of the landing line up lights
Red
4-6 lights
Used when the extended line up lights can’t be used because of ships motion.
What is the current capacity of the VLA system?
10 and 22
What gas ignites in a fluorescent lamp?
Mercury vapor
Where is the darken ship switches located?
On the break side of the door jam.
What happens when light enters a photocell?
Resistance goes down and current goes up
How do you properly dispose of florescent lighting?
Never break or throw overboard. Always dispose of them through a hazmat company.
What does PAR stand for in lighting?
Parabolic Aluminized Reflector
Exposed lamps/fixtures cannot be in which compartment?
Machinery Spaces
What are the 3 classes of search lights?
8, 12 , and 24
When is the automatic feature of the tell tale panel checked while underway?
Weekly
The glide slope indicator provides a display made up of what 3 colors?
Red, green, and amber
How many 10 amp transformers are in the VLA system?
4
What are the 3 classes of search lights?
8, 12 , and 24
The glide slope indicator provides a display made up of what 3 colors?
Red, green, and amber
How many 10 amp transformers are in the VLA system?
4
The purpose of the VLA system is to provide what?
Environment for safe helicopter operations
The voltage requirement for the homing beacon light is ______ volts AC
115/32
Description of extended line up lights?
White lights
Helps helicopter line up
Minimum of six on each side
Which VLA lighting system does the flasher sequencer control?
Extended line up
The vertical drop bar light is located ______ of the landing line up lights?
Aft
The helicopter in flight refueling lights (HIFR) provide what to the pilot?
A visual indicator of the ships heading at all times and provides the height reference during refueling.
Spacing of the HIFR (helicopter in flight refueling) lights should be spaced every _____ feet?
20
What are the power requirements of VLA lighting?
120 volts / 60 Hz
How many motor driven variable transformers are there in the VLA lighting system?
6
The minimum requirement to run the VLA lighting system is ____ amperes?
2
The wave off light system provides a visual reference indication to the pilot that the landing area is?
Visual cue to the pilot that the landing conditions aboard the ship are unacceptable.
When merging lighting system, you must read at a minimum ____ Meg ohms?
0.5
When light enters a photocell, resistance goes _______?
Down
You press the test button on a telltale panel and you get the following. What indications with you get for the following on the panel itself?
Primary filament extinguished?
Secondary filament extinguished?
Telltale panel off, but you are silencing the buzzer?
Yellow light ON, red light OUT, buzzer OFF. Replace primary in the morning.
Yellow light ON, red light ON, buzzer ON. Replace both immediately.
Yellow light OFF, red light ON, buzzer OFF.
Characteristics of a homing beacon?
White light
Located on the mast of ship
330 degrees visible
90 flashes per minute
Description of edge lights?
Red omnidirectional
4 lights along the edge
When inspecting a battle lantern, why is it important 2 loosen the bottom 2 screws first?
Leakage
A battle lantern with battery’s shall be inspected and turned on how often? What should you observe?
Monthly
Observe the dimness of the light, if dim replace battery’s immediately.
What determines the class of search light?
Drum diameter
When an incandescent lamp burns at a constant voltage what happens to the filament?
Evaporates and sublimes
