Electrical Machines The back emf produced in a dc motor depends on Z. P. none of these. P and Z. Z. P. none of these. P and Z. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2HZ 1 Hz 50Hz 2.5Hz 2HZ 1 Hz 50Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The noise resulting from vibrations of lamination set by magnetic forces, is termed as boo. magnetostriction. hum. zoom. boo. magnetostriction. hum. zoom. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has more stability cylindrical motor salient pole motor None of these both motors has same stability cylindrical motor salient pole motor None of these both motors has same stability ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the frequency of input voltage of a transformer is increased keeping the magnitude of voltage unchanged, then Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same Ph will increase but Pe will decrease Pe will increase but Ph will decrease both hysteresis loss(Ph) and eddy current loss(Pe) will increase Ph will decrease but Pe will remain same ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The condition for maximum running torque is R = S.X unity 0.5 lagging 0.707 lagging zero R = S.X unity 0.5 lagging 0.707 lagging zero ANSWER DOWNLOAD EXAMIANS APP
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