Voltage induce in the induction motor is highest at ____.
A. rated speed
B. starting
C. standstill
D. any of the mentioned
Polyphase Induction Motors
Full voltage starting of induction motor may cause _____.
A. high inrush current
B. high losses
C. dip in the voltages
D. all of the mentioned
Starters are required in the induction motor because ____.
A. torque produced is very low at starting to overcome inertia
B. of high starting current
C. they are not self starting
D. all of the mentioned
External methods of induction motor starting is employed to __.
A. Reduce the current
B. Improve efficiency
C. Reduce the voltage
D. All of the mentioned
Series reactor method of starting has main disadvantage of _____.
A. increasing starting torque
B. lowering the starting power
C. increasing the starting current
D. all of the mentioned