Virtual Labs

a: Due to abnormal currents and voltages b: Due to high resistance and inductance values c: Due to changes in the transformer turns d: Due to the induced e.m.f in the windings

a: Through heat sinks b: By a temperature shunt c: By using resistance d: By using a coolant

a: Due to change in supply b: Due to reversal in polarity of voltage c: Due to asymmetry in magnetic circuit d: Due to asymmetry in electric circuit

a: Constant always b: Zero always c: Depends on the load d: Can fluctuate

a: Flux is proportional to square of voltage b: Directly proportional c: Inversely proportional d: Independent of each other

Calibration and Testing of Single Phase Energy Meter.