Electrical Machines The emf induced in the dc generator armature winding is AC DC None of these AC and DC AC DC None of these AC and DC ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The condition for maximum running torque is 0.707 lagging unity 0.5 lagging R = S.X zero 0.707 lagging unity 0.5 lagging R = S.X zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine is invariably provided with forced ventilation? Hermetically sealed motor of refrigerator. Fractional horse power slow speed motor. Fractional horse power high speed motor. 50 MW generator in a power plant. Hermetically sealed motor of refrigerator. Fractional horse power slow speed motor. Fractional horse power high speed motor. 50 MW generator in a power plant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard system for controlling the speed of a DC motor is used where The accuracy in speed control is required. All of above. The speed in both the direction is required. Very fine speed control over the whole range from zero to normal speed is required. The accuracy in speed control is required. All of above. The speed in both the direction is required. Very fine speed control over the whole range from zero to normal speed is required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature and field both are connected. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are in series with the load. Armature and field both are connected. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are in series with the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called resonance. crawling. harmonics. cogging. resonance. crawling. harmonics. cogging. ANSWER DOWNLOAD EXAMIANS APP
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