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Sample Quiz

Example Quiz

Made by @Prathap

0 0

9

139

1: The direction of rotation of a three-phase induction motor can be reversed by:

20s

Interchanging all three phases cyclically

Increasing the supply frequency

Interchanging any two supply phases

Reducing the supply voltage

2: During normal motoring operation, the rotor speed is

20s

Equal to synchronous speed

Below synchronous speed

Above synchronous speed

Always zero

3: At standstill, the slip of an induction motor is

20s

0

0.5

1

-1