Lighting and Illumination MCQ
1. What is an LED Array?
Answer
Correct Answer:
A group of LEDs mounted on a printed circuit board, capable of producing a lighting output.
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2. What is layering light?
Answer
Correct Answer:
An interior design approach where several types of lighting are combined to achieve a specific ambience or mood.
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3. What is the lampholder?
Answer
Correct Answer:
The part of a lighting fixture that provides support and power for a lamp with a matching base.
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4. What is the specific component of a lighting fixture that emits light?
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5. What is the measurement unit for energy consumption?
Answer
Correct Answer:
Kilowatt-hour
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6. What does kilowatt measure?
Answer
Correct Answer:
Electric power
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7. What does Kelvin (K) measure?
Answer
Correct Answer:
Temperature
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8. What is the International Dark-Sky Association?
Answer
Correct Answer:
An international authority on light pollution and environmentally responsible outdoor lighting.
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9. What is the primary purpose of soffit lighting?
Answer
Correct Answer:
To illuminate areas of the ceiling that are lower than the primary surface
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10. What is an integrated lighting fixture?
Answer
Correct Answer:
A type of lighting fixture that offers superior energy efficiency, by using a specially-designed LED array and internal geometry.
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11. What is an IC Fixture?
Answer
Correct Answer:
Insulated Ceiling Fixture
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12. A type of fluorescent lighting ballast that applies a high-voltage pulse to the lamp is known as?
Answer
Correct Answer:
Instant Start Ballast
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13. What does "Initial Lumens" mean?
Answer
Correct Answer:
The Lighting output of a new lamp
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14. What is the main difference between an induction lamp and a fluorescent lamp?
Answer
Correct Answer:
The gas is not stimulated directly by electrodes in an induction lamp.
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15. What is the output of a lamp in indirect lighting?
Answer
Correct Answer:
Reflected
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16. What type of filament does an Incandescent Lamp have?
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17. What is light produced by heating a material called?
Answer
Correct Answer:
Incandescence
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18. What does illuminance measure?
Answer
Correct Answer:
The luminous flux on a surface, per unit of area.
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19. What does HPS stand for?
Answer
Correct Answer:
High-pressure sodium
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20. What is the main advantage of high voltage lamps?
Answer
Correct Answer:
They offer naturally diffused or scattered light.
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21. What is the rated power of an HO lamp?
Answer
Correct Answer:
Higher than conventional fluorescent tubes
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22. What creates a small but very bright ball of plasma in HEP lighting technology?
Answer
Correct Answer:
Radiofrequency
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23. What is the primary purpose of High-Bay Lighting?
Answer
Correct Answer:
To provide lighting in sports complexes, warehouses, or industrial locations.
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24. What is the common name for lighting systems designed for ceiling heights of 25’ or more?
Answer
Correct Answer:
High-Bay Lighting
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25. What does HID stand for?
Answer
Correct Answer:
High-intensity discharge
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26. What is a heat sink?
Answer
Correct Answer:
A lamp or luminaire component that is used to dissipate heat effectively.
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27. What is the name given to an improved version of incandescent lamps?
Answer
Correct Answer:
Halogen Lamp
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28. What is Hard Light?
Answer
Correct Answer:
A light source that creates shadows with a very sharp edge when cast on objects.
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29. What is glare?
Answer
Correct Answer:
Visual impairment caused by a bright source of light, directly visible or reflected by a surface.
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30. What is a Frosted Lens?
Answer
Correct Answer:
A white lens that is translucent but not transparent, which diffuses the output of a lamp.
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31. What is the measurement unit for illuminance?
Answer
Correct Answer:
Foot-candle (fc)
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32. What is the advantage of flush mount lighting?
Answer
Correct Answer:
There is little or no gap between the ceiling and the light.
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33. What is the main advantage of fluorescent lamps?
Answer
Correct Answer:
They are far more efficient than incandescent and halogen bulbs.
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34. Which type of lighting is more efficient than Fluorescent Lamp?
Answer
Correct Answer:
LED lighting
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35. What is the purpose of floodlights?
Answer
Correct Answer:
High-power lighting fixtures that typically use HID bulbs or their LED equivalents.
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36. What is the main cause of a lamp flickering?
Answer
Correct Answer:
Power supply issues
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37. What is flicker?
Answer
Correct Answer:
A phenomenon where a lamp blinks repeatedly, often caused by power supply issues, or a faulty ballast or driver.
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38. What is a Flat Panel Top LED?
Answer
Correct Answer:
A low-profile LED fixture that uses an edge-lit panel, designed to replace linear and parabolic fluorescent fixtures.
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39. What is a filament?
Answer
Correct Answer:
A wire coil that is heated to produce lighting in incandescent and halogen lamps, normally made from tungsten.
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40. What is the filament of an incandescent light bulb made from?
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41. What is the name of the 1992 law that established minimum efficacy requirements for incandescent and fluorescent lamps?
Answer
Correct Answer:
Energy Policy Act
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42. What is Energy Star?
Answer
Correct Answer:
An energy savings and sustainability program by the US Department of Energy and Environmental Protection Agency.
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43. What is the purpose of an ER lamp?
Answer
Correct Answer:
To collect and reflect light through a barrel in front of the fixture.
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44. What is an ER lamp?
Answer
Correct Answer:
A soft glass lamp that collects and reflects light through a barrel about 2" in front of the fixture.
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45. What is the main advantage of electronic transformers over magnetic transformers?
Answer
Correct Answer:
Smaller and lighter
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46. What are electronic ballasts?
Answer
Correct Answer:
Lighter and more efficient than magnetic ballasts
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47. Efficiency is a conversion ratio between what two lighting power outputs?
Answer
Correct Answer:
Lighting power output and electric power input
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48. What does the term efficacy refer to?
Answer
Correct Answer:
How effectively a lighting fixture can convert electric power into lighting
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49. What is the term for a type of LED fixture that uses a transparent acrylic pattern with etched dots, lines or patterns?
Answer
Correct Answer:
Edge Lit LED
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50. What is the main purpose of a driver?
Answer
Correct Answer:
Transforms the main supply voltage into a lower DC voltage
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51. What is a downlight?
Answer
Correct Answer:
A compact lighting fixture that directs its output downward
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52. What is the cause of glare when viewing a light source directly?
Answer
Correct Answer:
The light is too bright.
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53. What is the cause of glare?
Answer
Correct Answer:
Directed light
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54. What is a dimmer?
Answer
Correct Answer:
A device that regulates the lighting output of a lamp by controlling the power supplied.
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55. What is the adjective used to describe a lamp or fixture whose lighting output can be modulated with a dimmer?
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56. What does a diffuser do?
Answer
Correct Answer:
Scatter the light from a bulb
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57. What is diffused light?
Answer
Correct Answer:
Light produced by an extended surface, either directly or through reflection.
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58. What is a desk lamp?
Answer
Correct Answer:
A compact fixture used for task lighting on a desk, and which is generally portable.
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59. What does DC stand for?
Answer
Correct Answer:
Direct Current
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60. What is the CCT value of a daylight lamp?
Answer
Correct Answer:
5500K to 6500K
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61. What does CCT stand for?
Answer
Correct Answer:
Correlated Color Temperature
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62. What is the main purpose of daylight harvesting?
Answer
Correct Answer:
Reduce energy costs
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63. What does the acronym DALI stand for?
Answer
Correct Answer:
Digitally Addressable Lighting Interface
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64. What is the Cutoff Angle?
Answer
Correct Answer:
The angle beyond which it is no longer possible to see a light source directly.
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65. Crest Factor is the ratio of maximum lamp current to what?
Answer
Correct Answer:
Average operating current
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66. What is the main purpose of Cove Lighting?
Answer
Correct Answer:
For decorative purposes
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67. What is a cornice?
Answer
Correct Answer:
A soffit at the top corner of a wall
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68. What is Cool White?
Answer
Correct Answer:
A light source with a correlated color temperature of around 4100K.
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69. What is the name given to a type of fluorescent lamp where the tube is bent into a compact shape to reduce space requirements?
Answer
Correct Answer:
Compact Fluorescent Lamp
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70. What is a Cold Cathode Fluorescent Lamp?
Answer
Correct Answer:
A fluorescent lamp that emits electrons without heating its electrodes, applying only a high voltage
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71. What is the coefficient of utilization?
Answer
Correct Answer:
The fraction of a lamp's luminous output that reaches the work plane.
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72. What is a circuit breaker?
Answer
Correct Answer:
An electrical protection device that is normally located within a distribution board.
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73. What is the ceiling cavity?
Answer
Correct Answer:
The portion of a room that is above the lighting fixtures
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74. What is a canopy?
Answer
Correct Answer:
Part of a lighting fixture that covers the outlet box and wiring connections.
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75. What term describes the effect when lighting fixtures direct all of their lighting downward?
Answer
Correct Answer:
Cave Effect
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76. What is the SI unit for luminous intensity?
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77. What is the common term for the housing of a recessed downlight?
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78. For what is a lamp's burn position designed?
Answer
Correct Answer:
The operating position
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79. What is a bulb?
Answer
Correct Answer:
A transparent casing that contains a light source, generally made from glass.
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80. What is a bollard?
Answer
Correct Answer:
A type of lighting fixture consisting of a short and broad post with a lamp on top.
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81. What is a Bayonet?
Answer
Correct Answer:
A type of lamp base that connects with the socket using keyways instead of threads.
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82. What is the base temperature?
Answer
Correct Answer:
Maximum allowable temperature of a lamp base
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83. What is the purpose of a base in a lamp?
Answer
Correct Answer:
To connect to the lighting fixture and provide both physical support and electric power for the lamp
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84. What is the ballast factor?
Answer
Correct Answer:
Value that describes how a ballast affects the rated lighting output of a lamp.
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85. What is the name of the unit that represents the brightness looking directly at the source itself?
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86. What is luminous intensity?
Answer
Correct Answer:
A measurement of the light radiating from the lamp in a particular direction
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87. The human visual system has a stronger response to _____ than to other colours.
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88. What is a PECTRAL chart?
Answer
Correct Answer:
A chart of the visible spectrum of colors
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89. Which of the following is a unit of measurement for Colour Temperature?
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90. What range of the electromagnetic spectrum does visible light occupy?
Answer
Correct Answer:
400-700 nanometres
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91. Which of the following is TRUE about visible light?
Answer
Correct Answer:
It is a part of the electromagnetic spectrum
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92. What is ballast?
Answer
Correct Answer:
A component required by fluorescent and HID lighting fixtures.
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93. What does a baffle do?
Answer
Correct Answer:
Block direct sight of a lighting source.
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94. What does backlighting do?
Answer
Correct Answer:
Illuminate an object from behind
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95. Backlight is defined as the lighting output of outdoor fixtures that is emitted ________.
Answer
Correct Answer:
Opposite to the intended direction
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96. What is argon used for?
Answer
Correct Answer:
To prevent oxidation inside the bulbs of incandescent lamps
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97. What is architectural lighting?
Answer
Correct Answer:
Decorative lighting that is part of a building’s design and construction.
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98. What is an arc lamp?
Answer
Correct Answer:
A lamp that establishes an electric arc between two electrodes
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99. What is the definition of "Application?"
Answer
Correct Answer:
The intended use of a lighting product.
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100. What is the angle between the orientation of a light source and the viewing direction?
Answer
Correct Answer:
Angle of Light
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101. What is the procedure of determining the current drawn by a lighting fixture or a circuit consisting of multiple fixtures?
Answer
Correct Answer:
Amp calculations
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102. What is the measurement unit for electric current?
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103. What is the purpose of ambient lighting?
Answer
Correct Answer:
To provide visibility in a built environment
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104. What is accent lighting?
Answer
Correct Answer:
Lighting that focuses its output in a narrow beam.
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105. What does AC stand for?
Answer
Correct Answer:
Alternating current
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Architectural Engineering MCQs | Topic-wise