Electrical Machines In a DC Shunt Motor if the load current increases then field flux remains constant. decreases. decreases increases. remains constant. decreases. decreases increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 55 kVA single phase alternator has an effective resistance of 0.5 Ω. An excitation current of 10 A produces 200 A armature current on short circuit and an emf of 450 V on per circuit. The synchronous reactance will be 25.564 Ω. 2.241 Ω. 2.781 Ω. 2.74 Ω. 25.564 Ω. 2.241 Ω. 2.781 Ω. 2.74 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant voltage control constant power control constant current control constant torque control constant voltage control constant power control constant current control constant torque control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum efficiency will occur, when copper loss is_______to iron loss? equal to less than greater than any of the above equal to less than greater than any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of IM the torque is inversely proportional to slip. directly proportional to slip. inversely proportional to √slip. directly proportional to slip2. inversely proportional to slip. directly proportional to slip. inversely proportional to √slip. directly proportional to slip2. 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 motor torque. negative sequence currents are generated. the damper bars develop synchronous motor torque. the damper bars develop induction generator torque. the damper bars develop induction motor torque. negative sequence currents are generated. the damper bars develop synchronous motor torque. the damper bars develop induction generator torque. ANSWER DOWNLOAD EXAMIANS APP
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