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Electrical Engineering Interview Questions

how to meas-our losses for L.T & H.T

1512

whether choke act as a voltage regulator in tubelight or not?

Bhel,

3650

How you will determine the volume of oil in a particular Distribution transformer.

1262

How to calculate the value of earth capacitance in a transmission line.

1549

what is the difference between contactors & relay.

3856

Spacing of Transformers ratings are 10kva,15kva,25kva,63kva,110kva,150kva .........so on Q) Why transformer are not manufactured having ratings in between or other than these standard ratings ?

4385

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

1849

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

1465

what is the MF if CT ratio is 500/5 and in meter specification is 3.75 REVS/KWH? Thanks and Regards Selvendran.N

2574

Why relay connected R phase and B phase.?

3280

which part of transformer heats up the most and why? windings, core or oil .

6186

How do you know when the battery is fully charged?

9709

If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..

1822

Why is transformer a machine

1723

Why are the voltage levels in a powersystem are 11KV,33KV etc., why not 10KV,30KV?

3633

Un-Answered Questions { Electrical Engineering }

How Calculet The UPS AH In Load

941

why chock were used in old tubelights but are not newest tubelights?

1188

which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

1353

What is a surge supressor why its is used in synchronous generators

1372

how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.

1678

What is the formula to find out two phase active & reactive power

1515

Explain the process of commutation in a dc machine.

465

What is a compensator?

491

raleigh method

1454

What is slip in an induction motor?

489

What current position are you holding in your current company?

1442

why are distributed windings generally used in alternators?

2103

How you calculate the repturing capacity of a HRC fuse

1915

Define gain margin?

485

In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above

1578