Electrical Machines From no load to full load the slip will None of these slightly decrease. slightly increase. not change. None of these slightly decrease. slightly increase. not change. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the armature electric current is increased to double its previous value, and the time of commutation is halved, how will the reactance voltage vary? It will becomes four times. It will be halved. It will remain the same. It will be doubled. It will becomes four times. It will be halved. It will remain the same. It will be doubled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Electrical power transformer. Electrical power generator. Induction motor. DC motor. Electrical power transformer. Electrical power generator. Induction motor. DC motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be zero. about 2 V. 220 V. about 50 V. zero. about 2 V. 220 V. about 50 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting phenomenon is observed in which motor? Both A and C. Synchronous motor. Induction motor. DC motor. Both A and C. Synchronous motor. Induction motor. DC motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Star side leads by 30°. Delta side leads by 30°. Star side lags by -30°. Delta side lags by -30°. Star side leads by 30°. Delta side leads by 30°. Star side lags by -30°. Delta side lags by -30°. ANSWER DOWNLOAD EXAMIANS APP
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