Electrical Engineering Interview Questions
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I have recently seen a transformer which had two primary terminals and was connected between two lines,i would like to know what kind of transformer is it?short discription about it,any advantages,purpose of usage of the same.............

8 5112

how to measure the voltage drop in cables also give formulas to calculate.

Cable Wireless,

3 8581

for 12KW motor which cable size has to select for ex.10 meter.

4 8940




whats the advantage and disadvantage in TUMETIC mdel transformer

ABB,

2 6691

What is meant by unilitrel device?plz tell about h-parametrs

1 1742

what is ELCB?

Wipro,

10 14395

When connecting a loaded powerplant to the Huge grid,what are the factors to be considered and how the VAR flow will affect the system?

1 2309

iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?

RRB,

971




what type of questions are asked and howmwny questions belong this catagory?

RRB,

838

A 2D array X(7,9) is stored linearly column wise in a computers memory.Each element requires 4 bytes for the storage of the value.If the first byte address of X(1,1) is 3000,what could be the last byte adress of X(5,8)?

TCS,

2 2118

For testing 33kv cable hipot testing. How much kv we have to Apply .Give in details.

23 63994

why we permissive overreach in distance protection.where it is applicable to use in long r short lines

1438

what is the difference between underreach and overreach.what is the advantage of using overreach instead of underreach.explain

1 9679

WHAT AC (HI VOLTAGE TEST) VOLTAGE SHOULD APPLY FOR 33KV CABLES.EXPLAIN IN DETAIL

NTPC, Voltech,

12 12279

The neutral to earth connection in my industry is showing a zero reading (shorted). I have a machine which has to be installed where neutral to earth is not shorted and shows a leak voltage <3 Volts. Please suggest me how it is possible.

6 5941


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Un-Answered Questions { Electrical Engineering }

WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI

760


what is the formula for hv test for cable and circuit breaker..????

689


Electrical 'C' license full abbreviation , and full form

236


What is the formula for selecting the cabels according to load? How to calculate what sq.mm cabel to be used?

171


draw vector diagram and +ve,zero sequence diagram of symmetrical three phase fault.

675






What is the role of power pack in substation protection system?

1270


What is the working principle of servo motor? And explain it.

465


what is star delta starter? how it works? give its control and power diagram.

816


Why reactors use before incoming of ac vvfd drive?

435


what is cathodic protaction?

607


defination of controlled shunt reactor

1051


what is the difference between electrical choke and electronic choke?

1257


how to select battery for 15 KVA UPS with formula

1227


What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

842


What can you contribute to the progress of our Company as an employee if you are selected?

3958