Electrical Machines In a DC machine, the angle between the stator and rotor fields is 90o. 0o. 180o. dependent upon the load. 90o. 0o. 180o. dependent upon the load. 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 A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to 1/Ia Ia2 Ia I/Ia2 1/Ia Ia2 Ia I/Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be 1000 rpm 250 rpm 500 rpm 2000 rpm 1000 rpm 250 rpm 500 rpm 2000 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series motor is efficiently suitable for constant speed operation. high starting torque operation. low starting torque operation. none of these. constant speed operation. high starting torque operation. low starting torque operation. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable tan - delta (tanδ) of dielectric dispassion factor of power transformer insulating oil is generally taken as 3 at 90°C. 1 at 90°C. 2 at 90°C. 0.5 at 90°C. 3 at 90°C. 1 at 90°C. 2 at 90°C. 0.5 at 90°C. ANSWER DOWNLOAD EXAMIANS APP
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