Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is 1.92 -1.92 -0.08 0.08 1.92 -1.92 -0.08 0.08 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 12. 4. 7. 3. 12. 4. 7. 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a DC motor is 230 V, then back emf, for maximum power developed is 200 V. 460 V. 115 V. 230 V. 200 V. 460 V. 115 V. 230 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Diverters are used only in shunt motors series motors None of these either of these shunt motors series motors None of these either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase gradually. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will remains almost constant. The speed will increase gradually. The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? High voltage regulation None of these Low short circuit current Good voltage regulation High voltage regulation None of these Low short circuit current Good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS