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Electrical Level 2 Lighting Test Questions And Answers With Verified Solutions Rated A+
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Electrical Level 2 Lighting Test Questions And Answers With Verified Solutions Rated A+
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Electrical Level 2 Lighting TestQuestions And Answers With Verified
Solutions Rated A+
A lights prices with a high colour rendering index CRI will: - ANSWER✔✔Cause
the least emphasis or distortion of colour.
When describing colour temperature, lower numbers are usually warmer.
True or False - ANSWER✔✔TRUE
When connected to an incandescent lamp holder, the identified conductor must be
connected to the: - ANSWER✔✔SCREW SHELL TERMINAL
The type of screw base commonly used for incandescent lamps rated above 300 W
is called: - ANSWER✔✔MOGUL
Define luminous flux density: - ANSWER✔✔The density of light on a surface
What is the purpose of the inert gas in a tungsten filament lamp? -
ANSWER✔✔To retard the evaporation of the tungsten filament.
What wavelength range are the average human eyes most responsive to? -
ANSWER✔✔550 nanometers (nm)
Generally, the light source which will produce the highest colour rendering is: -
ANSWER✔✔Incandescent lamps
Ratio of light output lumens compared to the power input watts of a light source is:
- ANSWER✔✔EFFICACY
An incandescent lamp rated at 130V, 100w is connected to a 120 v source. How
will its life and light output be affected? - ANSWER✔✔Life is increased but light
output is decreased.
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