Electrical Machines The emf induced in a conductor rotating in a bipolar field is DC. both of above. AC. None of these DC. both of above. AC. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator if field winding attains the critical resistance the voltage generated will be zero. machine will generate maximum power. machine will generate maximum voltage. field winding will burn. the voltage generated will be zero. machine will generate maximum power. machine will generate maximum voltage. field winding will burn. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is more expensive for same KW output rating ? DC Shunt Motor Synchronous motor. AC single phase motor. Induction motor. DC Shunt Motor Synchronous motor. AC single phase motor. Induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. kept constant to certain value. increased. remains same. decreased. kept constant to certain value. increased. remains same. decreased. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Delta side leads by 30°. Star side leads by 30°. Star side lags by -30°. Delta side lags by -30°. Delta side leads by 30°. Star side leads by 30°. Star side lags by -30°. Delta side lags by -30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of core are generally made of cast iron. carbon. silicon steel. stainless steel. cast iron. carbon. silicon steel. stainless steel. ANSWER DOWNLOAD EXAMIANS APP
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