what happens when d cexcitation given to alternator is
removed while it is running or what happens when dc
excitation is failed in alternator while running?
Answer Posted / abubakr
when excitation is lost due to fault or field breaker
tripping . Reactive power will be supplied by the system and
generator will work as induction generator and its speed
will rise a little . generator which was in over excitation
mode will work in underexcitation .
but there is under excitation limit which should not be
reached so we should detect loss of excitation and trip
generator
| Is This Answer Correct ? | 11 Yes | 4 No |
Post New Answer View All Answers
How much depth n width required for laying of 1X70 Sqmm Cable in Desert???
i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula
what is auto re-closer?
Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?
Why 30kw 40 hp 4 pole 3ph induction motor over heated?any steps on reduction in heat?
why does rotor rotets?
Make a list observation on Transformer?
what is advertised hop count
How can we calculate the motor frame sizes?
Initially, when the input is not equal to the output — what type of response is this?
magnetizer priciple
plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id kambali_smita@yahoo.co.in
Where voltage are high and current to be interrupted is low the breaker preferred is:
when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil
I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2