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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why the starting current in Induction Motor is very high as compared to normal rated current ????

Essar,

6 17041

What will happen if 60 Hz rated transformer is connected to the supply of 50 Hz say 415 V (3-phase) step up to 3.3 kV...?? ?

Essar,

2 7171

Sir, I m 3rd year student 4m DCE and want to do internship in siemens or l&t or any other mnc related to electrical engineering. please tell me the procedure 4 same and oblige me

1942

Is earthing done for AC or DC or both?

6 9446

HOW TO CALCULATE ELECTRICAL, MECHANICAL,& OVERALL EFICIENCY OF GAS ENGINE POWER PLANT

1962

WHAT IS MEANT BY INSULATION CLEARANCE IN VACCUM?

1932

what is diffrence b/w -48vdc and +48vdc ?

1 4317

Why current transformers are rated in BURDEN instead of VA?

Bhel,

4 10747

Can RCD's used to protect the VVVF drive if not why.

2105

Is possible to increase the voltage without using transformer? why?

9 15999

Though transformer consist winding which usually cause reactive power change in both generator and motor but it wont affect reactive power passing through transformer why?

Jindal, Reliance,

2 5320

what is meaning of 230volts ac 50hzs ac supply is it rms or maximum to getting ac 230v what amount of max voltage they will send

2019

What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

1997

i have 2 motor of same rating. on no load condition one motor take 1.6A but other motor is taking 4.8A. what is the reason of this. please explain with proof.

Ambuja, UltraTech,

8 10479

In some countries it is found that an Earthing Transformer is connected at the LV sides of the Transmission and Distribution Substation Transformers.Actually what is the purpose the Earthing Transformer?

1 3849


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.

1958


why -48 volts dc used in telecommucation

2563


what is load vs Torque curve & why it is used?

2026


specify the inbuilt protections in DG

2023


What are books to be referred for KPTCL exam?

3633


what is a vector protection in transformer

1979


the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

2176


Why we use circular(Stepped) cross section in transformer core?

2205


What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

1832


Mention how NPN and PNP transistor works?

1234


types of central Air conditioner plant?

2106


why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

2112


In a large office how do we calculate required number of light fittings, assuming fittings are 4x18W or 2x36W fluorescent fitting ?

1828


The power supplied to a 50mH inductor from a 120V, 60Hz source will be

4744


hi there i am highly enthusiastic about discussing electrical concepts , and hence i wud lyk to invit al do intrested to join me at gtalk and hav a dscussun of the concepts , ad me as a freind . my email id is rakesh.2k99@gmail.com

2052