Electrical Machines In alternator, the rotary part is armature. magnetic field poles. none of these. core. armature. magnetic field poles. none of these. core. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A smaller air gap in a polyphase induction motor helps to increase the starting torque. reduce the chance of cogging. reduce the magnetizing current. reduce the chance of crawling. increase the starting torque. reduce the chance of cogging. reduce the magnetizing current. reduce the chance of crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 0.87 1.06 0.95 0.96 0.87 1.06 0.95 0.96 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The voltage across the terminals. The speed of motor. None of above. The torque required. The voltage across the terminals. The speed of motor. None of above. The torque required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For which of the following loads, armature reaction is magnetizing in nature? pure inductive load None of these pure capacitive load pure resistive load pure inductive load None of these pure capacitive load pure resistive load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1-S S 1/S 1/(1-S) 1-S S 1/S 1/(1-S) ANSWER DOWNLOAD EXAMIANS APP
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