what happen when dc shunt motor field is sudden open in
running condition
- 34 Answers
- 70395 Views
- APGenco, Bhel, IIT, JMRC, TCS, I also Faced
- E-Mail Answers
Answer Posted / gajanan
when fied is open then field current will be zero and so
field flux also tends to zero,as speed is inversaly
proportional to flux, motor will rotate at (infinite)high
speed then winding will burn
if as always protection is use or drive used for motor then
it will trip and stops motor and protect it from burning
| Is This Answer Correct ? | 53 Yes | 7 No |
Post New Answer View All Answers
what is the string efficiency
Tell me all plants load factors i.e which plant operating on which load?
State kirchoff voltage law?
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
What are the types of control system?
Why the magneti fields are not passes from southpole to north pole
HOW TO CALCULATE AMPs OF CURRENT TRANSFORMER IN HT Panel
how can maintaince the acb contactor moveing and fixing kit
how to test reverse power trip?
why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor
what is excitation/
If UG power cable both ends are to be earthed or what? If not why?
How earthing/grounding done in aeroplanes and ships.
why we get 2 differnet values for power factor in 2 watt meter method in 3 phase
What are the types of power in electrical power?
