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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How big (size) can the tertiary winding be in transformer? Can we load the tertiary winding, if yes then how much we can load it?

1 5180

What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1687

wht is meant by sh6

2 4616

What is an isolation transformer?Why do we need isolate circuits?Where do we use them?

2 6029

why the value of impedence is taken as %impedence in fault currrent calculation

1 3061

why use phase displacement in transformer.and effect of phase displacement on transformer

IOCL, ONGC,

2810

I have raw material for making Compact-Choke for flourscent lamp of 40 Watts. We are suppose to get 0.4 amps output at end. but we are getting 0.42 or 0.44 amps and above. We have done many testings in different but nothing worked out. Please suggest me how to get the correct output. We are using 1. core winding of 700 windings of aluminium 2. E-shape iron fillings and I-shape iron fillings to surround the winding.

6 8027

what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

2152

how the vaccum ckt breaker workes..? how the arc is quenching in it?

1 4310

what is differant beetween overload current and phase current?

KMJ, Petron ltd,

2239

why the no.of slots in stator in not equal to the no. of stator in rotor in induction motor????

Jindal,

4 20908

If i switch on a transformer but with no load connected to the secondary path.Is the transformer will burn?

5 7995

how we select HRC FUSE ?

AXA,

1 5927

how digital four pin earth resistance tester works

2 4939

what is difference between low voltage and high voltage

3 31606


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it

1896


Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

2080


Define load factor?

1055


What is slope...? Explain slope 1 and slope 2...?

1542


I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1631


how ceiling fan worked?

1849


when the time of backcharging the transformer three phases only enough or three phase with neutral is must.from these which one is the best one.

1994


You are of electrical field and you are going for software? Why

2259


why high speed tripping relay is used in protection circuit why not normal relay

1370


I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1774


What is referred to the electron in the outer orbit?

1092


what happen ehen synchronisation is done at below rated speed

2092


What is the difference between AC and DC injection methods for rotor earth fault protection

2147


Why power genaration in India is at 50HZ while America its 60HZ

2231


A well system is when , no. of bus bar is less or more. Tell me the concept of it.

1863