Electrical Machines Compensating winding are used to rectify the flux density waveform at throughout the air gap. interpole region. region under main pole. None of these throughout the air gap. interpole region. region under main pole. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator on no-load, the air gap flux distribution in space is sinusoidal. pulsating. flat topped. triangular. sinusoidal. pulsating. flat topped. triangular. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 280 V. 240 V. 220 V. 150 V. 280 V. 240 V. 220 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have more starting time. more starting torque. smoother acceleration. reduced starting current. more starting time. more starting torque. smoother acceleration. reduced starting current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2HZ 50Hz 2.5Hz 1 Hz 2HZ 50Hz 2.5Hz 1 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where The speed in both the direction is required. All of above. Very fine speed control over the whole range from zero to normal speed is required. The accuracy in speed control is required. The speed in both the direction is required. All of above. Very fine speed control over the whole range from zero to normal speed is required. The accuracy in speed control is required. ANSWER DOWNLOAD EXAMIANS APP
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