Question

What is earthing?

(a) connecting electrical machines to earth

(b) providing a connection to the ground

(c) connecting the electrical machines to source

(d) providing a source of current

The question was asked during an online interview.

My enquiry is from Measurement of Earth Resistance topic in division Measurement of Resistance of Electrical Measurements

Answer 1

Correct option is (a) connecting electrical machines to earth

To explain: Connecting electrical machines to the general mass of the earth by making use of a conducting material with very low resistance is known as earthing.