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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the difference between RCCB and ELCB?

3 7520

What is difference between PLC and SCADA

Uflex, Vimal Fire Controls,

13 70229

What will happen if i connect two 3-phase tranformers secondary supply on one bus bar that is R-Y-B-N?

GMR,

2 4731

WHY IN THREE PHASE CABLE 440V CURRENT FLOWS IF IN ONE PHASE 230V CURRENT FLOWS ???

3 8926

How Can we calculate current carrieng capacity of Copper Bus-Bars and Alluminium Bus-bar

2 7891

difference between load bus and dead bus?

4 30987

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

2092

what is FACTS & where i can material regarding to facts.

2 5050

how to mention 5mw generator in kva ? gen voltage is 11kv

6 10397

what is meant by reactive power ,active power & real power ? thank you

2 6238

What is difference between Dy11 & Dyn11 vector group transformer. Can both these transformers operate in parrallel.

Jaypee, JOY,

5 64661

why we are using auto transformer in sub station mostly???

2 11906

what is the relation between KVAR,KVA,KW?why we are mentioning capcitor rating in kvar?what is meant by arcing horn and horn gap in transformer?what is equipotential wire?

1 6876

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect each capacitor to busbar??

4 13433

In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.

HAL,

2123

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Un-Answered Questions { Electrical Engineering }

WHICH SIZE A.B.CABLE IS USED FOR 11KV.

2198

WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?

2099

Any Electrical Engineering jobs?Please refer for interviews. Thank you

1921

how can we calculate the ratio of caustic soda and water in lrs.

5845

what is value of Jin transformer

2100

Explain about Leakage Test.

2001

I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.

2069

briefly explain the main blocks found in a microprocessor based system

2194

What test must you do before powering up a circuit that you have been working on?

1863

What is s-domain and its significance?

1180

Motor,transformers,capacitor tubelight etc....

1647

how to find impedance , mutual indatnce in transmission lines

2298

if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

1858

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 ?

1974

what is the sludge current

2121

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