INDUCTANCE CAPACITANCE AND RESONANCE - Quiz

1) What is the unit of reluctance?

Weber / metre² Weber / metre Ampere turns / Weber Ampere turns / metre²

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

Induction method Single touch method Double touch method Divided touch 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%

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

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

5) How power rating is specified for transformers?

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