Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to calculate the load loss and no load losses of the power Transformer? i am having the following details : full load ct : in AMP HV :1676 ; LV:31.5 1800 KVA ;33KV/620 V for wind mill applications

ReasonSoft,

2 10885

working principle of UPS

Mantri,

15 77277

What is the technical reason for adopting color coding of three phase system as RYB.

ABB, ERDA,

11 18148




What is four quadrant metering system.

5 34270

What is harmonics. How does it get generated and means to arrest harmonics

Airtel,

8 12902

Difference B/W A/C & D/C Motors..?

Toyota,

10 11394

How does MCB operate without relay..?

Toyota,

10 19103

if we appling capacitor at above rated what are looses and what will be happen

Radiant, Real Estate,

4 3255




why do we need transformers?

12 32702

Why Humming noise originated in Starter motor and how it was generated ?

3 3939

i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

IOCL,

831

why transformer does not obey ohm law?

27 29267

Why high voltage lines (overhead ) are called high tension lines?

8 24720

say a transformer is designed for 33/11kv step down with ratio 0.33 for load 1 mva. if am giving 11kv as a input that same transformer what will happen to its o/p voltage. and whether it can be operated for 500kva

4 2694

hr round

893


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Un-Answered Questions { Electrical Engineering }

What is PQA???Applications........

1122


1.what is mean by 8/20 micro sec waveshape

873


Why saturation region slowly shifted in the left side?

677


sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

723


Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

6653






how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

798


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

1481


What should be the protection scheme for a 15kw, 3-phase motor working in a lathe machine.

791


what is the meaning of neutral displacement ???

1449


what about the power of wattmeter at starting and loding?

915


Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

1337


Thumb rule of cable size(rm>30 rm)X multiplying factor=ampere

418


What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer

510


why the neutral line is not giving shock to us if we touch it ?

598


WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

914