why field resistance is higher than armature resistance in
dc machines? and why filed resistance is kept at min value
at starting in same time of armature resistance at max value?
- 4 Answers
- 30788 Views
- I also Faced
- E-Mail Answers
Answer Posted / abdelbaset
because the consumable power in the field circuit assuming
the same voltage of the main circuit is lower than the
armature circuit. so the excitation current is lower than
armature current so field resistance is greater than
armature resistance
| Is This Answer Correct ? | 11 Yes | 16 No |
Post New Answer View All Answers
A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?
why and where we use early make & late break contacts in protection?
How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?
Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.
How a band pass filter is constructed?
How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.
how to calculate micom relay earth falt time and current sertting
What do you understand by avr?
Why using synchronising methed in DG's sets?
What is difference between isolator and circuit breaker?
what is stper motor
Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not
from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?
What is the difference between the impedance percent and impedance voltage ?
Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.
