Electrical Concepts & Lighting Intro Quiz

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1. Which of the below statements is correct?

a. Direct Current (DC) flows in one direction, and Alternating Current (AC) flows back and forth in a wave form.

b. Alternating Current (AC) flows in one direction, and Direct Current (DC) flows back and forth in a wave form.

c. Alternating Current (AC) is primarily used for charging batteries, while Direct Current (DC) is used for transmitting power over long distances.

d. Alternating Current (AC) and Direct Current (DC) both flow in the same direction, but Alternating Current (AC) has a higher voltage.

2. 120V is created between:

a. Line to Ground

b. Line to Line

c. Line to Neutral

3. Which of the below steps down voltage?

a. Switch

b. Transformer

c. Dimmer

d. Driver/Rectifier

4. Which of the below equations is correct?

a. Volts (V) = Watts (W) x Amps (A)

b. Amps (A) = Watts (W) x Volts (V)

c. Watts (W) = Volts (V) x Amps (A)

5. Which of the below defines lumens?

a. The luminous intensity produced by a light source within a specific direction of a solid angle.

b. The amount of light produced by a light source.

c. The amount of light arriving at a surface.

d. The amount of light emitting, passing through, or reflecting from a surface.

6. Efficacy is defined as:

a. lumens (lm) / watts (W)

b. lumens (lm) / sf (ft2)

c. candela (cd) / square meter (m2)

7. Correlated Color Temperature (CCT) is measured in what?

a. Fahrenheit (F)

b. Celsius (C)

c. Kelvin (K)

8. Which of the below terms is defined as “the measure of how well a test lamp renders color in comparison to the ideal source (scale of 1 to 100)?

a. Correlated Color Temperature (CCT)

b. Color Rendering Index (CRI)

c. Candela (cd)

d. Footcandle (fc)

9. Which of the below is a Solid State Light (SSL) source?

a. Incandescent

b. Tungsten-Halogen

c. Light Emitting Diode (LED)

d. Fluorescent

10. Which of the below techniques is used to determine the lamp life of LED’s?

a. When 50% of the test lamps burn out.

b. LM-80 and TM-21 (L70, L90, etc).

c. LM-79

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Electrical Concepts & Lighting Intro Quiz

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