Illumination Interview Question Answer - 2

Describe the advantages of providing lighting voltage transformer for lighting distribution system.

The following are the advantages of providing lighting voltage transformer for lighting distribution

• It reduces voltage fluctuation.
• Increase the life of lamps due to better voltage regulation
• Increase the efficiency of lighting system

Illumination Interview Question Answer - 1

Explain the term: Light

Light : It is small part of electromagnetic radiation which is sandwich between ultraviolet and infrared radiation.

Explain the laws of illumination.

Laws of illumination

Inverse square law : This law states that the illumination of a surface is inversely proportional to the square of the distance between surface and a point of light source. This law is applicable if the surface is normal to the line of flux.