Electrical Machines A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be 36 W. 25 W. 28 W. 30 W. 36 W. 25 W. 28 W. 30 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation of transformer is given by (V2 - E2) / E2 (E2 - V2) / V2 (V2 - E2) / V2 (E2 - V2) / E2 (V2 - E2) / E2 (E2 - V2) / V2 (V2 - E2) / V2 (E2 - V2) / E2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque developed in IM is nearly proportional to 1 / V. 1 / V2. V2. V. 1 / V. 1 / V2. V2. V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because field winding was wrongly connected there was no residual magnetism in the field circuit there was a break in the armature circuit field resistance was higher than critical resistance field winding was wrongly connected there was no residual magnetism in the field circuit there was a break in the armature circuit field resistance was higher than critical resistance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The constant losses in transformer is/are hysteresis loss. eddy current loss. copper loss. both 2 and 3. hysteresis loss. eddy current loss. copper loss. both 2 and 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased both power angle and power factor decrease power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease both power angle and power factor decrease power angle decrease and power factor increase both power angle and power factor increase power angle increase and power factor decrease ANSWER DOWNLOAD EXAMIANS APP
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