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ITI
Electrician
Electrician Set-1
Illumination
7

Illumination MCQ - Electrician (Set-1) with Answers

7) The study of illumination involves the :

Study of lighting and wiring systems

designing of a lighting system

calculating of wiring materials required in wiring

study of photometry

Answer is:

designing of a lighting system

Illumination MCQ - Electrician (Set-1) with Answers

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Related Illumination MCQ - Electrician (Set-1) with Answers

8) Energy radiated continuously in the from of light-waves is called :

luminous-flux

luminous-intensity

lumen

illumination

Answer is:

luminous-flux

9) The luminous-flux emitted in unit solid angle by a light source having a luminous-intensity of one candela is called :

illumination

luminance

one lumen

one lux

Answer is:

one lumen

10) The illumination at a point of a surface is the luminous-flux per unit area of the surface and its unit is :

lux

lumen

candela

watt

Answer is:

lux

11) The illumination of a surface is :

directly proportional to its distance from the source

inversely proportional to its distance from the source

directly proportional to the square of its distance from the source

inversely proportional to the square of the distance from the source

Answer is:

inversely proportional to the square of the distance from the source

Illumination MCQ - Electrician (Set-1) with Answers

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