Electrical Machines If the excitation is increased, the power factor is None of these unity power factor leading power factor lagging power factor None of these unity power factor leading power factor lagging power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by cooling the armature. reducing the load voltage. increasing the excitation. increasing the input to the prime mover. cooling the armature. reducing the load voltage. increasing the excitation. increasing the input to the prime mover. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 115 V 230 V 460 V 200 V 115 V 230 V 460 V 200 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 45° 30° 10° 60° 45° 30° 10° 60° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following are variable losses? hysteresis loss shunt field copper loss armature copper loss eddy current loss hysteresis loss shunt field copper loss armature copper loss eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which single phase motor is used for a refrigerator? Repulsion. Capacitor run. Universal. Split phase. Repulsion. Capacitor run. Universal. Split phase. ANSWER DOWNLOAD EXAMIANS APP
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