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 tie bus and bus coupler?

1 19191

Why does the radius of armature is less than the radius of pole shoe?

ABB,

2103

Why C.T secondary s2 done earthing?

4 15297

what is Harmonic effect?

2 4749

Star & delta kis principale pa hai.

ME,

3 5927

in dc machines in the armature nature of power is ac but why we take rasistance instead of impedance?

1 3485

What is the difference between Droop vs Isoch Control?

2367

Determine the BTU size of an aircon for 20 sq metre room

1819

why it is necessary to maintain frequency constant in a power grid ?

NTPC,

1 6039

what is the difference between electrical wire and electrical conductor?

4 18745

how to reduce earth resistance in sandy soil.

1 3738

How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

1975

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4792

what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

BARC,

1910

how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

BARC,

1 3433

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Un-Answered Questions { Electrical Engineering }

what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct

1781

how to prepare the technical test

2036

in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses? the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

1669

How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

2118

any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?

1872

What happens when two positively charged material is placed together?

1077

what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1869

Difference between on line capacitor and Station type capacitor

1957

with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....

1891

Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?

1431

WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?

4322

I'm looking for a softcopy manual set for a Credence ASL- 3000. Anyone know where I can get it?

2005

Is there chopping current in resistive circuit

1890

What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

2026

I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2

2866

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