Electrical Machines An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be locking. crawling. plugging. cogging. locking. crawling. plugging. cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motor with rotor circuit open will get over heated. not run. make noise. run normally. get over heated. not run. make noise. run normally. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. DC Shunt Motor The speed will increase in proportion to reduction in load. The speed will increase abruptly. The speed will remains almost constant. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer action requires a constant magnetic flux. alternating magnetic lux. alternating electric flux. increasing magnetic flux. constant magnetic flux. alternating magnetic lux. alternating electric flux. increasing magnetic flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following motors DC excitation is not required? reluctance motor 3-phase synchronous motor hysteresis motor 3-phase synchronous generator reluctance motor 3-phase synchronous motor hysteresis motor 3-phase synchronous generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator sparking between brushes and commutator surface may be due to over commutation. too rapid reversal of current. under commutation. any of the above. over commutation. too rapid reversal of current. under commutation. any of the above. ANSWER DOWNLOAD EXAMIANS APP
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