Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 1000 rpm 750 rpm 3000 rpm 1500 rpm 1000 rpm 750 rpm 3000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC series generator, the terminal voltage with increase in load will increase to rated voltage and then may decrease decrease increase gradually and then stay at rated voltage remain nearly constant increase to rated voltage and then may decrease decrease increase gradually and then stay at rated voltage remain nearly constant ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at lagging power factor. leading power factor. unity power factor. any of the above. lagging power factor. leading power factor. unity power factor. any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. wound. cage. none of these. linear. wound. cage. none of these. linear. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increases in field excitation of a DC generator, its generated emf remains constant. increases upto a limit and then remains almost constant. decreases. increases. remains constant. increases upto a limit and then remains almost constant. decreases. increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field to earth. to an AC source. in reverse. to a DC source. to earth. to an AC source. in reverse. to a DC source. ANSWER DOWNLOAD EXAMIANS APP
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