Welding - 3. Arc and Resistance Welding MCQ with Answers

Welding - 3. Arc and Resistance Welding MCQ with Answers

1) What is termed as motion of electrons?

Answer is:

Current

Explanation:

.

2) Which Instrument is used to measure voltage/emf?

Answer is:

Volt meter

3) What is the property that oppose the flow of electric current in a conductor?

Answer is:

Resistance

4) Which is the material that does not transmit electricity?

Answer is:

Insulator

5) What is the current that changes its direction and magnitude number of times per seconds?

Answer is:

Alternating current

Explanation:

Alternating current changes its direction and magnitude number of times per seconds.