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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is power system.........?

1 1280

why the starting current of a motor is high?

ITC Infotech,

3 4182

how many types of ACB breakers, describe briefly..?

1171

If a ACB breaker is tripping and closing problem, then what will we check internal..?

3 4556

WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

UltraTech,

1583

In DC current-excitation to transformer, why it sucks more current? Eventhough there is no power transfer between primary and secondary? R is very low so it should suck less current only na thn y its current increases?

Cairn,

2 3159

why a fan starts rotating in the reverse direction when condenser gets damaged?

1 3062

what are earthing material

1 2119

how to carried out tan delta test in 11 KV alternator ?

2037

how to carried out DAR test in 11 KV Alternator ?

1365

how to can we synchronize different capacity of DG sets.60kva& 250kva?

Power Plant,

2 2907

what is the minimum insulation resistance for HT AND LT motor ?

3 6054

why leading pf indicates a negative sign???

1 3129

inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 1945

For two systems transmitting the same amount of real power, the system with the lower power factor will have higher circulating currents due to energy that returns to the source from energy storage in the load.???

Bhel,

1078


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Un-Answered Questions { Electrical Engineering }

What is the drawback of class b amplifier? How is this minimized?

217


i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

952


Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

1265


WHAT IS THE TOTAL POWER GENERATION IN CHHATTISGARH?

1058


what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

1104






What is the power factor of an alternator at no load?

259


If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses

888


why would amp draw on neutral wire be as much as amp draw on the hot leg.

1144


What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

720


wath is this mining of bts

1322


ratings of lightning arrester

1175


is there any chart showing the suitable cable size according to AMP and length ? for three phase motors

523


What are the different power system losses and how can it be eliminated?

1132


what happen when power factor of 2 parallely operated transformer become equle?

1232


Define phase lag and phase lead?

199