Electrical Machines Open circuit test on transformer gives hysteresis loss eddy current loss both 1and 2 copper loss hysteresis loss eddy current loss both 1and 2 copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to vary the armature resistance. limit the armature current. none of above. control field current. vary the armature resistance. limit the armature current. none of above. control field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the synchronous reactance of alternators in which a given field current of 200 A on short circuit and a generated emf of 50 V on open circuit. Armature resistance is 0.1 ohm 0.25Ω. 1Ω. 0.5Ω. 0.23Ω. 0.25Ω. 1Ω. 0.5Ω. 0.23Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because None of these it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. None of these it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting the damper bars develop induction generator torque. negative sequence currents are generated. the damper bars develop synchronous motor torque. the damper bars develop induction motor torque. the damper bars develop induction generator torque. negative sequence currents are generated. the damper bars develop synchronous motor torque. the damper bars develop induction motor torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for hoisting and lowering which type of motor is preferred? DC series motor. AC slip ring motor. Synchronous motor. Single phase induction motor. DC series motor. AC slip ring motor. Synchronous motor. Single phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
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