Conductors and Insulation MCQ - Electrician (Set-1) with Answers

Conductors and Insulation MCQ - Electrician (Set-1) with Answers

6) When compared to copper, the aluminium has _____ of conductivity.

Answer is:

60.6%

7) Copper used in electric work should have a very high degree of purity, say

Answer is:

99.9%

8) Which one is NOT an electrical conducting material ?

Answer is:

Glass

9) Which one of the following is NOT a conductor ?

Answer is:

PCV

10) The material that contains free electron is

Answer is:

Silver