Question

What is the significance of a megger with respect to high resistance?

(a) it is used to limit the current

(b) it is used to provide stability

(c) used for measuring high resistance with respect to ground

(d) it is used for temperature protection

I had been asked this question during an online interview.

My doubt is from Applications of Megger in chapter Measurement of Resistance of Electrical Measurements

Answer 1

Right answer is (c) used for measuring high resistance with respect to ground

The best explanation: Temperature protection can be provided to a bridge circuit by making use of heat sinks. Megger is used for determining very high resistances between the conducting part of a circuit and ground.