Electromagnetic Induction Questions & Answers Pdf - 1

Question: 1

The dc motors are compared by their ____ regulation where as the dc generators are compared by their voltage regulation.

Answer:

speed

Question: 2

The core losses constitute eddy current and ____ losses.

Answer:

hysteresis

Question: 3

When the field of a dc motor is weakened, the speed of the motor _____

Answer:

increases

Question: 4

A variable resistor in series with a shunt field winding in a dc machine is called _____

Answer:

shunt field regulator

Question: 5

Fractional horse power motors are usually _____ phase type.

Answer:

single

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