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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

In a 11KV 3phase system do you need to earth both sides of the cable?

 2 5121

what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)

 1667

what is the main difference between simplex RTD and Duplex RTD?

 6 74942

by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

HP,

1512

why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

 1617

what will be the motor terminal box connection arrangement (star or delta). on what basis it decided?

 3 8069

what happens if the phase sequence of parrlel connected sys will changed & phase displacement

 1 2915

What is the actual formula for transformer short circuit test? below i given rating of the transformer.. 1000KVA, pri 11KV, Pri amp 56A. %Z 5.95..

2 5360

What do you mean by per capita requirement of electrical energy in india

Tech Mahindra,

1647

why cant we use earth as neutral at home whereas neutral is actually grounded at transformer end?

 4 6237

What is meant by a stray loss of a induction motor??? What is the equation to find it

 2574

when a airgap of the induction motor gets larger does it draw more current ??? does it power factor gets lower?

 3 4119

how to maintain frenquncy with syncronising sub-station for distribution

Suzlon,

1649

use of choke in APFC panels

Kemrock,

2 4871

What is the de rating factor of cable? What is the importance of the de rating factor in cable select

 1877

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Un-Answered Questions { Electrical Engineering }

Lt motor sfu flashing reasons?

1290

Discribe type of fault in DOL and stardelta startor.

1796

how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)

1484

why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??

1524

why i can not use thimble on capacitor duty contactor

869




What is the difference between line drop and percentage line drop?

1066

What is kvar?

848

Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1304

sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

1029

what is a bus post insulator? explain its application in a substation.

11716

sir, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to eee_dharmendra@yahoo.com

1393

If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

597

why asa method ZPF method is more accurate than ASA method?

5314

Define availability (operational)?

646

why the active power flow of some line is increased when the active power of out is cut ?

1637

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