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Electrical Engineering Interview Questions
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how to select power and control contactor .

Bhel,

1 3393

What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

 1564

Hi, We have have the major losses between BBT ( Bus Bar Trunking) to LT Incomer & LT to HT incomer, how to arrive the losses?

 1 3051

What are the complete specifications of a motor?.

RRB,

2 5217

why in scott connection of transformers, main transformer is tapped at 50% and teaser transformer at 86.6%?

Bhel, Bosch, College School Exams Tests, Wipro,

5 31328

difference between analog pressure gauge & digital pressure gauge?

 1 6768

what is the meaning of electrical maintenance?

GE Healthcare, MAHINDRA,

3 22359

Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

 3 5545

definition of transponder?

 1 2730

working principle of current sensing relay? how its work?

 1 5108

write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

1671

what is lumped and distributed elements?

 1529

Write a note on RC operational amplifier as integrator

 1 2709

what are the main differences of delta and star connection

Essar,

5 6189

can we run three phase motor by single phase? and what happens if we do this

Kirloskar,

8 11868

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Un-Answered Questions { Electrical Engineering }

PLZ EXPLAIN THE INTERLOCKING AND CONTROLLING OF CONTACTORS????HOW CAN I DO THAT?

5708

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

1079

we specify current in case of feeder but in case of distributor voltage, why?

1369

Which is the largest hydropower station in the world?

605

What is proportional controller?

682




Earth has zero potential then what would be the neutral potential ?

915

i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?

1565

What happen if we apply square wave or traiangular waveform voltage to the transformer primary winding instead of sinusoidal wave?

1627

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5052

What is the use of bundle conductors?

614

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

1559

What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

1616

What is the difference between the impedance percent and impedance voltage ?

1683

How will be the single line diagram of series trip HT breaker? how it works?

2078

which metal is use in shunt

5199

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