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The LED Lighting Quiz

LED lighting quiz

If you’ve perused our blog, you might have noticed that there’s a ton of information not just about LEDs but about all things lighting. Maybe you’re already a lighting genius, are just getting started, or simply want to test your knowledge before reading our posts. We developed a quiz to see where you stand. Go ahead. Don’t be shy. The answers, along with your corresponding genius level, will be at the bottom of the page.

 

1) Which of the following are true of LED lights?

  1. They produce the longest-lasting, most energy-efficient lighting available today.
  2. They have endless application possibilities, such as under-cabinet, landscape, vehicle, work, home, industrial, and commercial lighting.
  3. They contain no mercury, harmful gasses, or toxins.
  4. Because of their low power consumption, they’re great alternative lighting solutions for solar-powered systems.

2) When it comes to incandescent bulbs, what percent of the energy they consume is used to create visible light?

  1. 100%; incandescent bulbs are extremely efficient
  2. 0%
  3. 10%; the other 90% is wasted heat
  4. 50%

3) When it comes to LEDs, what percent of the energy they consume is used to create visible light?

  1. 80%; only 20% is wasted heat
  2. 40%
  3. 100%
  4. 0%; LED bulbs are not very efficient

4) Which of the following is a compact fluorescent bulb (CFL)?

LED lighting - light bulb types

5) What is an ingress protection (IP) rating?

  1. The measurement of how smart a smart bulb really is
  2. A chart that ranks LED bulbs from brightest to dimmest
  3. A code that indicates the size of solids and pressure of liquids that a bulb, fixture, or circuit board can resist
  4. A chart that ranks light bulbs from largest to smallest

6) Which of the following are true of halogen bulbs?

  1. They last approximately three times longer than incandescent bulbs but are not as efficient as compact fluorescent lamps (CFL) or LED bulbs.
  2. They come in many shapes and are commonly used as PAR, BR, AR, and MR spotlight or flood light bulbs.
  3. They are extremely sensitive to skin oils, which can cause them to malfunction or burst.
  4. They are the best bulbs on the market.

7) What is a lumen?

  1. The color of light emitted from a bulb
  2. A bright star in the sky
  3. Another name for an LED chip
  4. A measurement of the amount of light produced by a source

8) What does color-rendering index (CRI) say about a light source?

  1. How many colors are shown when the light is on
  2. How accurately a light source reveals the true colors of objects, people, clothing, etc. when compared to how colors are shown in incandescent light or daylight
  3. The hue and tone of white light emitted from a specific bulb or fixture
  4. That the bulb will be dim

9) Which of the following is an LED bulb?

LED lighting - light bulb types

10) Which of the following groups are types of high-intensity discharge (HID) lamps?

  1. Sodium-ammonia, mercury-vapor, and aluminum-sulfate
  2. High-pressure sodium, metal-halide, and mercury-vapor
  3. Metal-halide, tungsten-filament, ash-vapor
  4. Crystal-magnesium, iron-folate, sodium-ammonia

11) True or false: Efficiency is the percentage of energy a bulb uses to create light—taking into account the energy that is wasted through heat and resistance.

12) Which of the following are types of LEDs?

  1. COB (chips-on-board)
  2. ABC (active-button-chips)
  3. SMD (surface-mount diode)
  4. Through-hole

13) True or false: Photons are the particles that make up light.

14) Which of the following is a high-intensity discharge (HID) bulb?

LED lighting - light bulb types

15) True or false: Unlike LED bulbs, high-intensity discharge (HID) bulbs can take several minutes to reach full brightness.

16) What is correlated color temperature (CCT)?

  1. How many colors are shown when the light is on
  2. How accurately a light source reveals the true colors of objects, people, clothing, etc. when compared to how colors are shown in incandescent light or daylight
  3. The hue and tone of white light emitted from a specific bulb or fixture
  4. The absence of color from a light bulb

17) What are lighting hot spots?

  1. Spots of light that are visible to the eye
  2. Spots that will burn if you touch them
  3. Where you go to connect to the internet
  4. The best place to buy light bulbs

18) What is the difference between alternating current (AC) and direct current (DC)?

  1. AC flows in one direction, and DC flows in multiple directions.
  2. AC flows in alternating directions, and DC flows in one direction.
  3. AC is less powerful than DC.
  4. DC runs left to right while AC runs up and down.

19) What are the most common applications for HID lights?

  1. Parking lots
  2. Living rooms
  3. Warehouses
  4. Outdoor sports arenas

20) Which of the following is a halogen bulb?

LED lighting - light bulb types

 

 

Answers

1: A, B, C, D

2: C

3: A

4: A

5: C

6: A, B C

7: D

8: B

9: A

10: B

11: True

12: A, C, D

13: True

14: D

15: True

16: C

17: A

18: B

19: A, C, D

20: C

 

20/20 = All hail the lighting genius! You know everything there is to know.

15/20 = You’re pretty smart, but a little brushing up wouldn’t hurt.

10/20 = You’re halfway to being a lighting genius. Keep studying.

5/20 = You’ve been slacking, but there’s still hope!

0/20 = Read our blog posts! Read everything! Do it now!