Electrical Machines In synchronous motor, the damper winding is generally used to reduce noise level only. provide starting torque only. reduce the eddy currents. prevent hunting and provide the starting torque. reduce noise level only. provide starting torque only. reduce the eddy currents. prevent hunting and provide the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding are used to rectify the flux density waveform at None of these interpole region. region under main pole. throughout the air gap. None of these interpole region. region under main pole. throughout the air gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low current rating which winding is employed to DC machine? None of above Wave winding Both lap and wave winding Lap winding None of above Wave winding Both lap and wave winding Lap winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a DC motor at the time of starting is Very high. Zero. Very low. Normal. Very high. Zero. Very low. Normal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with rated transformer current direct current high frequency supply rated transformer voltage rated transformer current direct current high frequency supply rated transformer voltage ANSWER DOWNLOAD EXAMIANS APP
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