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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

is it possible to test of bus bar in high rise building without completed full floor ?

1641

How to check it good or bad capacitor

IMD, ST,

4 5696

electricity bill multiplication factor 487.20xconsumption=total unit in kwh. what is 487.20 ?

Spec International,

1 2859

what will happen if i will done heart shape hole in transformer core?

Bhel, ONGC,

1 3663

How do apply electrical 'c'license......pls advice

1659

Advantage of earthing transformer

EID Parry,

2 3674

what is the calculation of power factor?

GATE,

4 4828

Which device is provided as backup of Buchholz relay???

Indian Railways,

2 4549

IDMT relay are mostly used for protection against..??? 1)Earth Fault 2)Inter turn fault 3)Overloading 4)None of the above

Indian Railways,

1 2889

should dc supply will give the transformer to build up the voltage level

1 2340

Could Please Explain briefly. Why used stabilizing resistance series with High impedance bus differential protection relay.

NCC,

1739

any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

1634

how to calculate cable size with respect kw

SPMI,

1730

How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

Reliance,

1920

sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

Bhel, TNEB Tamil Nadu Electricity Board,

2114

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Un-Answered Questions { Electrical Engineering }

How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.

2377

- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

2699

how to select electronic timer(Star-Delta) setting for diff. rating motors

1918

how a flip flop can be used as a latch?

1946

give single line diagram of D.G distribution form alternator to main L.T panel?

7521

Lt motor sfu flashing reasons?

1746

In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

2168

What is the most essential condition for the voltage build up for a d.c. Shunt generator?

1109

how does high earth to neutral voltage affects electronic circuit?

1889

What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?

2596

In layman terms, what is the difference of Dielectric strength and dielectric constant when speaking of an insulating oil

2641

What is mean by hot and cold loop testing? What is the difference between them?

1083

How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?

1924

working principle a.v.r. ?

2352

For overhead protection we use which transformer?

2428

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