Electrical Machines Hysteresis loss is proportional to f. f2. f1.5. f3. f. f2. f1.5. f3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will rotate in the same direction as before maintenance. get heated and damaged. rotate in direction opposite to that before maintenance. not start at all. rotate in the same direction as before maintenance. get heated and damaged. rotate in direction opposite to that before maintenance. not start at all. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is None of these leading power factor lagging power factor unity power factor None of these leading power factor lagging power factor unity power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Tappings of a transformer are provided at the middle of hv side at the phase end of lv side at the neutral side end of hv side at the phase end of hv side at the middle of hv side at the phase end of lv side at the neutral side end of hv side at the phase end of hv side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 30°. 90°. 120°. 60°. 30°. 90°. 120°. 60°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control provides speed control above rated speed. in one direction only. in both direction. below rated speed. above rated speed. in one direction only. in both direction. below rated speed. ANSWER DOWNLOAD EXAMIANS APP
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