Electrical Machines In DC machine torque depends on which of the following? speed armature current (I) flux (φ) both A and B speed armature current (I) flux (φ) both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. increased. kept constant to certain value. remains unchanged. decreased. increased. kept constant to certain value. remains unchanged. decreased. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for hoisting and lowering which type of motor is preferred? DC series motor. Single phase induction motor. Synchronous motor. AC slip ring motor. DC series motor. Single phase induction motor. Synchronous motor. AC slip ring motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an induction generator. synchronous motor. induction motor. synchronous generator. induction generator. synchronous motor. induction motor. synchronous generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V. 220 V. 222 V. 230 V. 225 V. 220 V. 222 V. 230 V. 225 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 800 V. 200 V. 100 V. 400 V. 800 V. 200 V. 100 V. 400 V. ANSWER DOWNLOAD EXAMIANS APP
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