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 19394

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

ABB,

2161

Why C.T secondary s2 done earthing?

4 15534

what is Harmonic effect?

2 4935

Star & delta kis principale pa hai.

ME,

3 6093

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

1 3575

What is the difference between Droop vs Isoch Control?

2435

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

1877

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

NTPC,

1 6147

what is the difference between electrical wire and electrical conductor?

4 18967

how to reduce earth resistance in sandy soil.

1 3840

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

2047

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

4870

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

BARC,

1968

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 3553

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Un-Answered Questions { Electrical Engineering }

A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

1961

can any tell me why slope 40% and 80% is calculated in differential protection?

1888

What is difference between mcb and mccb.

1149

how rectifier transformer work in electroststic precipetatore(esp?

2649

Define super node?

1214

How does the phase sequence controller works, how it identifies the phases? confirm working principle

2105

Define cut-off rate?

1085

I WANT YHE TECHNICAL AND ELECTRICAL SPECIFICATIONS OF 2x4MW 11KV 2x10MW 11KV 2x25MW 11KV 2x100MW 11KV HYDEL POWER PLANT i.e PROTECTION SYSTEM,MONITORING,CONTROL SYSTEM,GENERATION,SYNCHRONISATION,METERING PLEASE SEND THE DETAILS TO MY MAIL ID SPRAVEEN_222@YAHOO.CO.IN

2093

what are all the components required to assemble solar panel other than pv cell?

1493

How does PLC work for sychronising of Two or more DG sets?

2076

Why neutral is not used in three phases dol starter

1950

in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

1917

how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

1979

What is excitation in case of dc motor?

1165

Why synchronous motor is used in power factor improvement,dc series in lift

1662

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