Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the PIU.

Jindal,

1 1025

PIU how does work?

1062

What is the Power Plant.

Sail,

5 3385




How many types of AC current?

8 13085

As we know,charged clouds(from which lightning stroke initiates)may be charged with either +ve charge or -ve charge. Now say one cluster of cloude is fully charged with +ve charge & another cluster is fully charged with -ve charge. In the sky these two cluster of charged clouds have come in such a distance that, if they come clouser by some few yeards then the lightning discharge will take place between these two cluster of clouds. Under such a situation an Aircraft came inbetween. what happend??

5 3140

what is the function of NAT & NAC contacts in breaker control switch (TNC)??

1 14882

what is the difference betn earthed and unearthed cables which is commanly used why?

Bhel, Power Grid,

2 5014

In electrostatic precipitator why positive terminal of tranformer rectifier unit is grounded?

2 8586




I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 3412

In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

996

what is the higest transmission voltage and generated voltage in india

14 21588

I want to know the standards for earthing system as per IEC, BIS & IEEE.

2 12922

Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.

Engineers India Limited,

1148

what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

ABB,

10 48128

What is the difference between AMF panel and DG Synchronization panel? please define the working of both the panels?

ABB, Power Grid,

3 25994


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Un-Answered Questions { Electrical Engineering }

I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA

1529


How to test Alternator stability test for REF relay

187


1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

1242


WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

581


physical identification of HT & LT panel

479






plz explain the auot-reclosing circuit in electrical engineeing

1150


I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

747


CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D

1200


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

879


How to set a Zone 1 distance relay for distribution feeder?

777


What is ideal IR values for ground and neutral.

483


need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

622


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

490


how to failure indution motor insulation & how to improve heat in motor insulation

580


How I calculate the ELCB for circuit breakers?

904