Chapter 17 Lighting Equipment and Systems
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Light sources can be grouped into four major classes. Which of the following is not one of those
classes?
1) _______
A) Fluorescent. B) LED.
C) Low intensity discharge. D) High intensity discharge.
2) Which of the following statements are true regarding rated lamp life? Select all that apply. 2) _______
A) For fluorescent, it’s the time when a group of lamps’ output depreciates to 70% of initial
value.
B) For incandescent, it’s the time elapsed when 50 percent of a group of lamps remain
burning.
C) For LED, it’s the time elapsed when 70 percent of a group of lamps remain burning.
3) What would a “T-8″ lamp designation tell us about the lamp? Select all that apply. 3) _______
A) It has a tubular shape. B) It is 1″ in diameter.
C) It is a tungsten-halogen lamp. D) It is an 8-watt lamp.
4) What are the units of “efficacy”? 4) _______
A) Foot-candles per inch. B) Lumens per hour.
C) Candlepower per steradian. D) Lumens per watt.
5) Which of the following lamp types need a ballast to operate? Select all that apply. 5) _______
A) Incandescent. B) Fluorescent.
C) LED D) High intensity discharge.
6) Which of the following lamp types is capable of virtually instantly starting? Select all that apply. 6) _______
A) LED B) High intensity discharge.
C) Fluorescent. D) Incandescent.
7) Which of the following lamp types has the best color rendering index? 7) _______
A) LED. B) Fluorescent.
C) Incandescent. D) High intensity discharge.
8) Which of the following lamp types is generally the most energy efficient? 8) _______
A) Incandescent. B) LED.
C) High intensity discharge. D) Fluorescent.
9) LED sources can result in very efficient fixtures. Which of the following are reasons for this?
Select all that apply.
9) _______
A) Diffuse light output. B) High efficacy.
C) Point source. D) Directional light output.
10) Which of the following lighting distribution patterns would be considered “semi-indirect”? 10)
______
A) 1/2 up, 1/2 down. B) 2/3 up, 1/3 down.
C) 1/2 to the wall, 1/2 to the room. D) 1/3 to the wall, 2/3 to the room.
11) Design should avoid extreme brightness in the field of vision. How might this be accomplished
in street lighting?
11)
______
A) General diffuse distribution.
B) Asymmetrical distribution.
C) Low Intensity Discharge (LID) lamps.
12) Which are qualities which should be considered in selecting an outdoor fixture? Select all that
apply.
12)
______
A) Natural colors. B) Insect resistance.
C) Corrosion resistance. D) Uniform distribution.
