Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 50 W 75 W 112.5 W 168.75 W 50 W 75 W 112.5 W 168.75 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Rotational loss Copper loss All of these Iron loss Rotational loss Copper loss All of these Iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increases in field excitation of a DC generator, its generated emf increases upto a limit and then remains almost constant. increases. remains constant. decreases. increases upto a limit and then remains almost constant. increases. remains constant. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If we increase the rotor reactance value, the maximum torque will None of these decrease increase not changed None of these decrease increase not changed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be series. parallel. any one of the connection. no resistance is connected. series. parallel. any one of the connection. no resistance is connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? 2-S 1-S S 1/S 2-S 1-S S 1/S ANSWER DOWNLOAD EXAMIANS APP
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