| Other Electrical Engineering Interview Questions |
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|what is ring main unit(Rmu)? what is its function
|what happens when parallel resonance occurs?
|why transmission voltages are in multiple of 11kv?
|cb used in railway applications is?
|When do you use a VFD motor?
|when giving a supply to wounded coil it will get
magnetised, but the same is not if it is not wounded on a
core..and it is getiing short....why.......
|how will u exactly calculate the unit consumption of the
|Why we use cosine angle for calculating power factor not in
sine angle ?
|what is difference between delta-delta,delta-star
|WHAT IS THE NECESSITY OF GIVING PARTICULAR COLOURS FOR 3
|When should I use earth leakage circuit breaker for incomer
and when should I use it for each feeder seperately?
|I have carried out wiring for lighting in a shed in
Industrial area which contains Metal halide lamps & have
balanced in 3ph.Now when we put all the lines on in the
daytime the current taken at 3phases at MCB comes to be
equal i.e.28,29,28Amps respectively but in the night time
i.e between 7p.m.to 11p.m. at the same MCb the current is
52,59,62Amp, though I have fit 63A MCB it is tripping in
the above period.What may be the reason.?
Note: This industry is located in industrial area where
majority of steel ingot manufacturing plants are there.
Whether this may be due to harmonic? what should I do to
overcome above problem.pl suggest urgently.
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