1.

An ac induction motor is used for a speed control application. It is driven from an inverter with a constant V/f control. The motor name-plate details are as follows : V = 415 V, Ph = 3, f = 50 Hz, N = 2850 rpm The motor is run with the inverter output frequency set at 40 Hz, and with half the rated slip. The running speed of the motor is

A. 2400 rpm
B. 2280 rpm
C. 2340 rpm
D. 2790 rpm
Answer» D. 2790 rpm


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