Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 1820W 1920W 2000W 1450W 1820W 1920W 2000W 1450W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss remains constant. increase. None of these decrease. remains constant. increase. None of these decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift decreases in both generators and the motors with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. decreases in both generators and the motors with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with high frequency supply direct current rated transformer voltage rated transformer current high frequency supply direct current rated transformer voltage rated transformer current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon both 2 and 3 maximum flux density supply frequency load current both 2 and 3 maximum flux density supply frequency load current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate maximum current. no voltage. maximum voltage. maximum power. maximum current. no voltage. maximum voltage. maximum power. ANSWER DOWNLOAD EXAMIANS APP
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