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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

2 5128

In 3phase power= Root*3*v*i*cos@ What is the power in 2phase....??? and Derive it

Essar,

3 8129

What is the difference between KV,KVAR,KVA,KW?

L&T, PowerHouse, YUI,

6 53335

how to calculate voltage drop in long distance cable? for an e.g lamp of 12 volt ac ,300watt is 90 meter away from supply i.e (x'mer 230 v / 12v)and i m getting 8 volts at lamp terminal ....

1 3151

how you can select circuit breaker for 2000kva transformer?

TATA,

9 16533

What are the applications that use Solid State Drives in your home?

L&T,

1 4405

In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

1221

what is the function of generator exciter

NTPC,

11 59955

One of the advantages of HRC fuse links is that they can be used to back up equipment with an inadequate rupture rating. briefly discuss what this means

1 4348

What is meant by the KA-rating of a circuit breaker? In this regard, discuss the stresses experienced by the circuit breakers

3 11397

WHAT IS THE DIFFERENCE BETWEEN KW AND KVA ?

10 28891

In Battery Charger - What is the meaning of End Cell Voltage and Float Voltage.

FLSmidth, Focus, PSEB,

9 32425

How to Calculate the maximum Demand required for a connected load for a manufacturing Plant

6 74530

How to design harmonic filter at the project stage without nowing the harmonics levels

1246

How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay

1 2702


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Un-Answered Questions { Electrical Engineering }

what is the main parts of transformer? how it is functioning? pls giv the ans briefly.

1031


how to get electrical supervisour certificate in gujarat

1094


WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

1349


if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1038


give me applications of sequence bridges . (used in 3 phase un balanced systems)

1020






Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above

1234


In the magnetic fluxes, what is the role of armature reaction?

229


What are the three constants associated with a steady state error?

224


our industries ht line so power fluctation(once drop of power please rectify causes

1088


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..

1521


what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?

1704


What is the difference between electronic regulator and ordinary rheostat regulator for fans?

203


he compression ratio for a petrol engine generally lies between

247


how the works electronic energy meter?

1230


How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

990