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Electrical Engineering Interview Questions

HOW TO CALCULATE LV CABLE SIZING?

L&T, MRF,

5813

HOW TO CALCULATE EHV CABLE SIZING?

L&T,

8311

WHAT IS THE USE OF EARTH SWITCHES?

L&T,

63842

HOW TO CALCULATE CT AND VT RATIO IN PRTECTION AND METERING?

23551

How to calculate % Impedence?

ISRO,

6150

In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?

30060

why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?

5915

will we have to design the UPS differently for both i.e. if we want to connect the two batteries in parallel and/or we want to connect the two batteries in series ?

4097

what is neutral ground resistance relay? how it is helpful in protecting system?

6047

how to calculate of which rating transformer should be selected? take any example

4521

in a 740 kw dc seperately excited motor field voltage is constant about 17.4 volts and armature voltage is500 volts dc. how it is possible to have two different voltages from single transformer of output voltage 500 volts? if any difficulty in question contact ajitsingh.kadian@gmail.com

3026

is it possible to step down voltage of single phase from a three phase sysem? explain

2721

how does ELR works? explain

1715

what is diffrence between primary & secondry transformer?

3916

IS there any mechanical connection between the field winding and armature winding of a dc generator?

IOCL,

10792

Un-Answered Questions { Electrical Engineering }

11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??

808

given data are load current & power factor cable core size? plz any one update the calculation formula

986

Why IR value of the (HT cable Plus synchronous motor) is less while individually having IR values in GΩ?

917

which type of questions asking for solar companies?

757

The moisture in air will condense at

269

I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.

816

what is the difference between droop mode and ischnorous mode in thermal powerplant?

1744

What the main causes of transient interruptions on Over-Head Distribution Lines?

1199

State and define ohm’s law?

228

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

2125

if we have 320KVA Genset kindly advice how much load we can put it.

535

(1)Can earth and be conected together (2) what is the diferent between earth & neutral

817

I WANT HOW CALCULATE TO CABLE FOR WELDING PLANT ?

1010

what is interpose? where it is used and why it is used?

246

What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

2943