Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

dielectric strength of vacuum is greater than SF6 but for 132Kv uses sf6 breaker & for 33kV uses vaccum breaker why such a contradiction?

MSETCL Maharashtra State Electricity Transmission Co Ltd,

2 4783

I have lowered a submersible pump having 100 LPM discharge & 130 Mts. Head, 15 HP rating on borewell. After lowering 108 Meters, It is taking 39 amps & blowing the fuse. Can someone put light what is the cause behind it ?

1 2391

I AM COMPLETED DIPLOMA IN E.E.E. AS WELL AS B.TECH IN ANDHARPRADESH.. HOW I THE Certificate of competency as Electrical Supervisor.

1 3192

What is the difference between acs 550 & acs 850

Madhucon,

5807

How to find ampere on ht side for selection of cable size ???

1801

1.Why sinle phase motor is not self starting 2.working principle of alternator 4.list out electrical formula

2 4156

What is the capacitance values of 132,220,400 & 765 kV current transformer

1922

Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 2641

Please let me know when replacing electromechanical Relays for protection of generators with sr489 multilin Relay, then there is no need to use 86 master trip relay Too. I am wondering this multilin relay has no contact to Stop breaker reclosing as 86 does

Neucel,

1 2752

How do I calculate/select Droop CT ratio for various capacity of generators?

3654

What is power factor?

L&T,

3 7943

how is the incoming cable size calculated for a given current rating of a panel??

1935

what's the different between ELCB, ELR and ELS?

CP,

1 39816

how freewheeling diode improves the powerfactor

5424

What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?

BFL,

2248

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Un-Answered Questions { Electrical Engineering }

current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

1601

Differentiate between induced emf and self inductance?

1150

Ceiling Fan and Storage type water heater. Discuss

1966

Define peak time.

1145

Salient pole alternator is more stable, why?

2717

What are the advantages and disadvantages of open loop control system?

1121

what is meant by re-rolling motor? how it differs from standard motor?

2035

HOW WORK HEAT PLATE EXCHANGER

1992

Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.

2091

What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

2525

mention hazard experienced during installation

1979

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

2266

why the India electrical supply transmission loss is high when compare to us

1979

What are the types of control system?

1428

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

2076

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