Electrical Machines The no load current in a transformer lags the applied voltage by 90°. about 115°. about 75°. 0°. 90°. about 115°. about 75°. 0°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve voltage level. Improve power level. Improve power factor. Improve current level. Improve voltage level. Improve power level. Improve power factor. Improve current level. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms connected directly to a 220 Volt supply. If the armature is stationary then the current flowing through the armature is 340 A. 250 A. 570 A. 440 A. 340 A. 250 A. 570 A. 440 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. power factor. magnetizing current. speed. air gap flux. power factor. magnetizing current. speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of eddy current losses. hysteresis losses. mechanical losses. ohmic losses. eddy current losses. hysteresis losses. mechanical losses. ohmic losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because it limits the speed of the motor. it limits the starting current to a safe value. None of these It starts the motor. it limits the speed of the motor. it limits the starting current to a safe value. None of these It starts the motor. ANSWER DOWNLOAD EXAMIANS APP
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