Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!

Bhel,

1937

What is warm / cold start of HT motors. How many warm start & cold start are possible in a day?

1567

Waht will happened if reactive power increase in the line? waht about active power increase too?

3 9036

What is open delta Xformer? It's adavntages & Use?

1774

What is inrush current? how can calculateit? what is the affect of it?

1533

how to calculate the torque of a motor?

1578

Is VVVFD reduced the starting current of an induction motor?

1 2678

Why ELCB trip, when neutral touch with ground?

1 4084

What is the important precuations need tocarried out while working with Electrolite in Battery PM?

1479

Why battery chargers are use in substation?

5 25328

What is IPXX?

2 10463

What is core CT & it's function?

1644

A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?

1499

What is the important parts of SF6?

2 4419

I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for that?

5 7526


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Un-Answered Questions { Electrical Engineering }

Advantages of using generator circuit breaker (GCB) scheme in a power station ?

4735


at what base you will tell the direction of rotation of dc motors and generators?

661


How the annunciator works ? How to do its wiring

1807


whati s the sludge current in ups

1696


Distinguish between nuclear power station with thermal power station for initial cost, starting period, cleanliness, and transportation of fuel

1526






How equivalent impedance is calculated in thevenin theorem?

629


DG Earth Value?

1860


Usage of flywheel diode in relays

1468


what is the reqirred voltage in HT motor to get full RPM on no load test?

1554


What is servo motor and what are different types of servo motor

1876


Why auxiliary transformers are not connected in parallel in primary stations?

956


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.?

1789


How can we calculate the KVA rating of a Distribution transformer from its core details?

1597


what is the difference between "Rotary bypass isolation switch and Normal bypass switch" pls share indepth techs?

1616


What is industrial plc

1300