Illumination MCQ - Electrician (Set-1) with Answers

Illumination MCQ - Electrician (Set-1) with Answers

11) The illumination of a surface is :

Answer is:

inversely proportional to the square of the distance from the source

12) The illumination required for a workplace where fine work is performed will be in the order of :

Answer is:

1500 lumens/sq. metre

13) The illumination required for a workplace where fine work is performed will be in the order of

Answer is:

1500 lumens/sq. metre

14) The illumination required for a workplace where rough or unskilled work is performed will be in the order of

Answer is:

150 lumens/sq. metre

15) The metric unit of illuminance (or) illumination is :

Answer is:

lux