Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 1 0.5 0 any of the above 1 0.5 0 any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop synchronous motor torque. DC motor torque. induction motor torque. induction generator torque. synchronous motor torque. DC motor torque. induction motor torque. induction generator torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a motor falls from 1100 r.p.m at no-load to 1050 r.p.m at rated load. The speed regulation of motor is 3.76%. 4.76%. 2.57 %. 2.56 %. 3.76%. 4.76%. 2.57 %. 2.56 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by reducing the load voltage. increasing the input to the prime mover. increasing the excitation. cooling the armature. reducing the load voltage. increasing the input to the prime mover. increasing the excitation. cooling the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The self induced emf in the coil undergoing commutation is called the reactance voltage. statically induced voltage. dynamically induced voltage. None of these reactance voltage. statically induced voltage. dynamically induced voltage. None of these ANSWER DOWNLOAD EXAMIANS APP
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 112.5 W 75 W 50 W 168.75 W 112.5 W 75 W 50 W 168.75 W ANSWER DOWNLOAD EXAMIANS APP
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