Electrical Machines The no load current in a transformer lags the applied voltage by 90°. about 75°. 0°. about 115°. 90°. about 75°. 0°. about 115°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Increase. Remain unaltered. Oscillate around the normal speed. Reduce. Increase. Remain unaltered. Oscillate around the normal speed. Reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Zero power factor. Unity power factor. Lagging power factor. Leading power factor. Zero power factor. Unity power factor. Lagging power factor. Leading power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound 4 pole dc motor has 460 conductors. Find the number of parallel paths between the conductors? data provided is insufficient. 6. 2. 4. data provided is insufficient. 6. 2. 4. 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 direction opposite to that before maintenance. not start at all. get heated and damaged. rotate in the same direction as before maintenance. rotate in direction opposite to that before maintenance. not start at all. get heated and damaged. rotate in the same direction as before maintenance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is not found in which motor? DC series. DC shunt. Induction motor. DC compound. DC series. DC shunt. Induction motor. DC compound. ANSWER DOWNLOAD EXAMIANS APP
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