Electrical Machines Which motor cannot be started on no load? both B and C shunt motors series motors cumulative compound motors both B and C shunt motors series motors cumulative compound motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Magnetic field of a DC generator is produced by what? Electromagnets. Both B and C. None of the options. Permanent magnets. Electromagnets. Both B and C. None of the options. Permanent magnets. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as air gap. relative speed. cogging. crawling. air gap. relative speed. cogging. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a transformer to be tested at full load conditions but consuming only losses from the main, we do back to back test load test None of these OC and SC tests back to back test load test None of these OC and SC tests ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 19% 40% 5% 10% 19% 40% 5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then None of these I1 < I2 I1 > I2 I1 = I2 None of these I1 < I2 I1 > I2 I1 = I2 ANSWER DOWNLOAD EXAMIANS APP
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