Recent questions tagged excited

1 answer 16 views

A separately excited dc motor operating in first quadrant is fed from 3-phase semi -converter free -wheeling diode is open circuited, then the motor :  (A) can be operated in first quadrant (B) can be operated in first & second quadrants (C) can be operated in first & fourth quadrants (D) cannot be operated

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
1 answer 57 views

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ (A) directly proportional to α and Φ (B) inversely proportional to α and Φ (C) directly proportional to α and inversely proportional to Φ (D) directly proportional to Φ and inversely proportional to α

asked Apr 28, 2018 in Power Electronic Controlled Drives by Shimroz123
1 answer 29 views

If the load of the normally excited synchronous motor is increased the power factor will?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
1 answer 98 views

Why synchronous machine is called doubly excited machine?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
1 answer 23 views

If the field of synchronous motor is under excited, power factor will be?

asked Mar 18, 2018 in Synchronous machine by Shimroz123
2 answers 144 views

Separately Excited DC motor

asked Aug 9, 2017 in Electrical Machine by Zeeshan
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