Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of ohmic losses. mechanical losses. hysteresis losses. eddy current losses. ohmic losses. mechanical losses. hysteresis losses. eddy current losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be more than core loss. zero. equal to core loss. less than core loss. more than core loss. zero. equal to core loss. less than core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 75 W 168.75 W 50 W 112.5 W 75 W 168.75 W 50 W 112.5 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is series. shunt. cumulative compound. differential compound. series. shunt. cumulative compound. differential compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotor resistance speed control is used in dc shunt motor. synchronous motor. squirrel cage induction motor. slip ring induction motor. dc shunt motor. synchronous motor. squirrel cage induction motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole dc generator runs at 1500 rpm. The frequencyof current in the armature winding is 0 Hz 25 Hz 50 Hz 100 Hz 0 Hz 25 Hz 50 Hz 100 Hz ANSWER DOWNLOAD EXAMIANS APP
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