Electrical Machines As compared to an induction motor, the air gap in a DC motor is between 50% and 90%. same. more. less than 50%. between 50% and 90%. same. more. less than 50%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase, 2 KV alternator has an armature resistance of 0.8 ohms and 4.94 ohms respectively. The voltage regulation of the alternator at 100 a load 0.8 loading power factor is 0%. 7%. 14%. 8.9%. 0%. 7%. 14%. 8.9%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in DC generators will result in increase in slip. open circuit. short circuit. reduction in generated emf. increase in slip. open circuit. short circuit. reduction in generated emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Ke is eddy current constant, Kf is form factor, f is supply frequency, Bm maximum flux density in core of transformer, the expression of eddy current loss in transformer, is given by KefKf2Bm2. Kef2Kf2Bm2. Kef2Kf2Bm. Kef2KfBm2. KefKf2Bm2. Kef2Kf2Bm2. Kef2Kf2Bm. Kef2KfBm2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its power factor will reduce its efficiency will improve its speed will increase its speed will reduce its power factor will reduce its efficiency will improve its speed will increase its speed will reduce ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing of DC generator means neutralization of residual magnetism. creation of residual magnetism by a DC source. increasing flux density by providing extra ampere-turns in field. None of these neutralization of residual magnetism. creation of residual magnetism by a DC source. increasing flux density by providing extra ampere-turns in field. None of these ANSWER DOWNLOAD EXAMIANS APP
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