Take Illumination MCQ Test & Online Quiz to Test your knowledge

Practice here the best Illumination MCQ Questions test that checks your basic knowledge of Illumination. This Illumination MCQ Test contains 25+ Multiple Choice Questions. You have to select the right answer to the question. Finally, you can also download here the Illumination MCQ PDF from the link given below.

Illumination MCQ

1) Carbon arc lamps are commonly used in

  • A. Cinema Projector
  • B.Street lighting
  • C.Photography
  • D.None of the above

2) Which of the following will need highest level of illumination?

  • A. Hospital wards
  • B.Proofreading
  • C.Bedrooms
  • D.Railway platforms

3) Illumination of one lumen per sq. meter is called.............

  • A. Foot candle
  • B.Candela
  • C.Lux
  • D.Lumen meter

4) Which photometer depends on its operation on Lambert's cosine law?

  • A. Trotter Illumination Photometer
  • B.Guild's Flicker Photometer
  • C.LummerBrodhum Photometer
  • D.Macbeth lllumino meter

5) which of the following is not the standard rating of GLS lamps?

  • A. 15 W.
  • B.40 W.
  • C.75 W.
  • D.100 W.
Download Free : Illumination MCQ PDF

6) Due to moonlight, illumination is nearly...............

  • A. 0.3 lumen/m2
  • B.30 lumen/m2
  • C.300 lumen/m2
  • D.3000 lumen/m2

7) The level of illumination on surface least relies upon............

  • A. Type of reflector used
  • B.Distance of the source
  • C.Ambient temperature
  • D.Candle power of the source

8) One lux is the same as..............

  • A. one lumen/sq. m
  • B.one lumen/sq. cm
  • C.one lumen/100 sq. m
  • D.one lumen/1000 sq. m

9) The color temperature of day light is around...........

  • A. 50 K
  • B.160 K
  • C.600 K
  • D.6000 K

10) Which filament material has the lowest melting point?

  • A. Tantalum
  • B.Osmium
  • C.Carbon
  • D.Tungsten

11) Which of the following material is used as filament in the incandescent lamps?

  • A. Tungsten
  • B.Silver
  • C.Osmium
  • D.Tantalum

12) Lumen/watt is the unit of

  • A. Light flux
  • B.Luminous intensity
  • C.Luminous efficiency
  • D.Brightness

13) The melting point of Tungsten is about..............

  • A. 2400oC
  • B.2600oC
  • C.2800oC
  • D.3400oC

14) Filament lamps normally operate at a power factor of..............

  • A. Unity
  • B.0.5 Lagging
  • C.0.8 Lagging
  • D.0.85 Leading

15) ...............will need lowest level of illumination.

  • A. Displays
  • B.Railway platform
  • C.Fine engravings
  • D.Audiotoriums

16) In house the illumination is in the range of..............

  • A. 60 – 65 lumens/watt
  • B.35 – 45 lumens/watt
  • C.10 – 20 lumens/watt
  • D.2 – 5 lumens/watt

17) The unit of luminous flux is...............

  • A. Watt/m2
  • B.Watt
  • C.Lumen/m2
  • D.Lumen

18) Which of the following statements is correct?

  • A. Light consists of shooting particles
  • B.Light consists of electromagnetic waves
  • C.Light is a form of electrical energy
  • D.Light is a form of heat energy

19) Which photometer depends on its operation on Lambert's cosine law?

  • A. Guild's Flicker Photometer
  • B.Macbeth lllumino meter
  • C.Trotter Illumination Photometer
  • D.LummerBrodhum Photometer

20) In case of............least illumination level is required

  • A. Hospital wards
  • B.Skilled bench work
  • C.Drawing offices
  • D.Fine machine work

21) Standard wattage of 3 ft. fluorescent tube is ..........

  • A. 20 W
  • B.40 W
  • C.60 W
  • D.80 W

22) For the same wastage which lamp is cheapest ?

  • A. GLS lamps
  • B.Fluorescent tube
  • C.Sodium vapor lamp
  • D.Mercury vapor lamp

23) The output of a tungsten filament lamp depends on ...............

  • A. Size of shell
  • B.Size of lamp
  • C.Temperature of filament
  • D.None of above

24) The rate of evaporation of tungsten filament in a lamp depends on ...............

  • A. Glass shell diameter
  • B.Vapor pressure inside
  • C.Exhaust tube diameter
  • D.None of above

25) Carbon arc lamps are commonly used in ..............

  • A. Street lighting
  • B.Photography
  • C.Domestic lighting
  • D.Cinema Projectors

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