INDUCTANCE CAPACITANCE AND RESONANCE - Practice Mode

1) What is the unit of reluctance?

Weber / metre<sup>2</sup> Weber / metre Ampere turns / Weber Ampere turns / metre<sup>2</sup>

Correct Answer: Ampere turns / Weber

2) Which method of magnetization is used to make commercial purpose permanent magnets?

Induction method Single touch method Double touch method Divided touch method

Correct Answer: Induction method

3) What is the composition of steel and silicon steel in transformer core?

Steel 97% and Silicon 3% Steel 95% and Silicon 5% Steel 93% and Silicon 7% Steel 90% and Silicon 10%

Correct Answer: Steel 93% and Silicon 7%

Explanation:

.

4) What is the purpose of using laminated core in transformer?

Reduce copper loss Reduce hysteresis loss Reduce mechanical loss Reduce eddy current loss

Correct Answer: Reduce eddy current loss

5) How power rating is specified for transformers?

Watts (W) Voltage (V) Volt ampere (VA) Horse power (HP)

Correct Answer: Volt ampere (VA)

Previous Question Set Back to Question Sets Next Question Set

Try Another Topic

Try Another Quiz