Electrical Machines What is power factor of a 3 - φ induction motor at no load? Equal to 1. High. Same as full load. Low. Equal to 1. High. Same as full load. Low. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous condensers are used to improve the power factor reduce hunting All of these improve starting torque improve the power factor reduce hunting All of these improve starting torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC motor are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor ? 15.30%. 16.67%. 14.28%. 18.25%. 15.30%. 16.67%. 14.28%. 18.25%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type motors are preferred for lathes? Squirrel Cage induction motor. Either A or B. Synchronous motor. DC shunt motors. Squirrel Cage induction motor. Either A or B. Synchronous motor. DC shunt motors. 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 9/16. 3/4. 4/3. 16/9. 9/16. 3/4. 4/3. 16/9. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will run at very low speed. start haunting. burn. run at very high speed. run at very low speed. start haunting. burn. run at very high speed. ANSWER DOWNLOAD EXAMIANS APP
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