Additional

Question 1

It is the least expensive in terms of energy consumed and has the advantage of providing instant illumination when the switch is on.

Answer 1

Incandescent Lamp

Question 2

It is considered more efficient than the incandescent and used widespread in exterior lighting.

Answer 2

Mercury Vapor Lamp

Question 3

It emits purplish white color caused by an electric current passing through a tube of conducting and luminous gas.

Answer 3

Mercury vapor lamp

Question 4

Has a similar appearance to mercury vapor but provides a light source of higher luminous efficiency and better color rendition.

Answer 4

Metal Halide

Question 5

This provides good color rendition, high lamp efficiency as well as long life.

Answer 5

Fluorescent

Question 6

It cannot project light over long distance and thus are not desirable as flood type lights.

Answer 6

Fluorescent

Question 7

This has gained acceptance for extetior lighting of parking areas, roadways, building, and commercial intetior installations.

Answer 7

High pressure sodium vapor lamp