For the following questions answer them individually
The power transformer is a
A change of 5% in supply voltage to an induction motor will produce a change of approximately
If the supply frequency to the transformer is increased, the iron loss
The maximum temperature permitted for class A insulation is
Two transformers connected in parallel share load in the ratio of their KVA ratings, provided their ohmic impedance are
The high frequency hum in the transformers is mainly due to
A 400/200 volts transformer has pu impedance of 0.05. The HV side voltage required to circulate full load current during short circuit test is
Non-loading heat run test on transformers is performed by means of
A three phase induction motor is driving full-load torque which is independent of speed. If the line voltage drops to 90% of the rated value, % increase in motor copper losses
A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now increased. It will feed
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