what happen when dc shunt motor field is sudden open in
running condition
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
11kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?
EXPLAIN THE TERMS "INTEREST AND DEPRECIATION" AS APPLIED TO ECONOMICS OF POWER GENERATION.
HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.
there are cam operated switches - why we call cam operated , What is cam ?
why 1.7Uo for HV cable Hi pot test?IE standard why?
why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?
what will happen reduce the transformer voltage from 415v to 406v, is it save the energy,? are this methodis good to reduce the energy.?
What is meant by vector group
what are the differant std sizes of cable trenches?
how to select the double earth conductor if 21A full load?
What is servo motor? what is its purpose?
1.What is the range of stator resistance of 3-phase induction motor? 2.Two electrically operated vibro motors are foxed in parallel direction in vibrating feeders. what is the direction of both vibro motors?
what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?
What is the phase relationship between the primary and secondary voltages of a transformer?
what is the formula of starting current of 3phase and 1 phase motor???