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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why a three phase induction motor cannot run at synchronous speed ?

RUET,

7 40842

brief notes on ammeters

1051

What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

1276

the voltage per turn of a primary winding of a transformer is the same as the voltage per turn of the secondary winding of the transformer. why?

8 18467

What is meant by locking of rotor in synchronous motor? Explain me locking in detail?

3 16234

WHAT IS A DIFFERENCE BETWEEN A DC GEAR MOTOR AND STEPPER MOTOR.AND WHICH IS MORE APPROPRIATE TO USE FOR POSITION CONTROL PURPOSE?

1 8072

WHAT IS A BASIC DIFFERENCE BETWEEN THYRISTOR,TRIAC AND A DIAC.AND WHAT R THERE APPLICATIONS?

Petronas, TCS,

5 47217

WHAT IS THE COMPLETE DEFINATION OF POWER FACTOR?HOW IT CAN BE IMPROVED?AND WHAT IS CAPACITIVE LOD AND INDUCTIVE LOADS

2 7330

Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com

HPCL,

1195

what is the difference between induction and synchronous motor?explain in simple words?why 3 phase motor is given preference over single phase motor.

10 20740

explain me how a power factor is improved by adding a capacitor?what capacitor do to improve it?in simple words and in detail?thx

7 8545

what is dc transformer? how it work?

15 30322

what is meant by leading or lagging power factor?like in capacitor power factor is leading and in inductor power factor is lagging

4 7657

what is anti-pumping relay and the significance of it in a switcgear cb control system?

1 3127

What is mean by powerfactor. What is the difference between leading and lagging power factor?

HCL,

2 6938


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Un-Answered Questions { Electrical Engineering }

What are the factor to be consider for CT selection in 132kV substation?

1147


In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.

2298


why we get 2 differnet values for power factor in 2 watt meter method in 3 phase

924


what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?

1146


we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?

927






what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

972


How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.

902


How to test the Secure Elite 440 Multi function meter working condition.

1112


we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

871


if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1007


What are the advantages & disadvantages of a group electrive drive?

1234


What happens if we run alternator on under frequency? 

1156


do we use neutral grounding for resistive balanced load? if we use what happen?

899


What are the Full Forms of TVM, MTL, CVT ?

194


What are protections for dty type transformers

945