Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 4 V 2 V 1 V 0 V 4 V 2 V 1 V 0 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is reduced, the power factor is unity power factor leading power factor None of these lagging power factor unity power factor leading power factor None of these lagging power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their KVA ratings are equal polarities are properly connected percentage impedances are equal turn- ratios are exactly equal KVA ratings are equal polarities are properly connected percentage impedances are equal turn- ratios are exactly equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 95% 92% 94% 96% 95% 92% 94% 96% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because it limits the starting current to a safe value. it limits the speed of the motor. None of these It starts the motor. it limits the starting current to a safe value. it limits the speed of the motor. None of these It starts the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip exists in induction motor. in both machines. none of above. synchronous motor. induction motor. in both machines. none of above. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
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