Electrical Machines No load test of 3-phase induction motor gives which of the following? None of these constant loss variable loss both A and B None of these constant loss variable loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of 3 - Φ IM, plugging means locking of rotor due to harmonics. interchanging two supply phases for quick stopping. pulling the motor directly on line without a rotor. starting the motor on load which is more than the rated load. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. pulling the motor directly on line without a rotor. starting the motor on load which is more than the rated load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Damper winding is used to increase the load current. both 1 and 2. decrease the load current. suppress the hunting. increase the load current. both 1 and 2. decrease the load current. suppress the hunting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on excitation load angle synchronous reactance both 1and 2 excitation load angle synchronous reactance both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 16/9. 4/3. 9/16. 3/4. 16/9. 4/3. 9/16. 3/4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For same HP rating and full load speed which of following motor has poor starting torque? Series. Cummulative compound. Differently compounded. Shunt. Series. Cummulative compound. Differently compounded. Shunt. ANSWER DOWNLOAD EXAMIANS APP
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