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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

Infotech, Vijai Electricals,

3 11842

what is extra low voltage system

3 10607

WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

NTPC,

8 16491

Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?

2 4651

operation of diesel generator

2031

What is Antipumping Function & If we have C.T how we find the Ratio ?

2029

How to Convert Gen KW to H.T amps ?

2 6998

at which voltage level arcing ground is occurs ??????????

TATA,

2068

why test lamp didn't glow across 500v megger?

Aurobindo,

4 7979

why we are testing cables with DC supply not with AC supply?

Aurobindo, DEWA, L&T,

9 31047

What is the Difference Between resistance and resistivity?

Sun Pharma,

2 7471

what is the different between surgearrester and lighting arrester

HPCL,

4 8409

why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?

2 5370

what is the different bitween ETP & WTP

Square Pharma,

1 9993

According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

4172


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What is the problem of internal failure in ship engine telegraph system norcontrol?

2406


Refernce currents are to be generated using refernce cueernts how can this be done

2265


what is effect of length of air gap on performance of dc motor and generator?

1886


Disadventage of cable-gland earthing if any ?

2231


How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

2122


either water sensor or flow meter,how we observe the water level, f any other equipment are in market ?

1879


how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)

1986


we use 400/5A ct and 35/roor3KV,/0.1/root3KV,0.1/root3KV pt ratio. What is the multiple factor of this meter.

2009


What kind of preventive maintenance are there for transformer?

2275


How the PF control while running DG set with load

2180


what should be the acceptrd value of winding resistance for 2.5MVA transformer

2303


How Can you do Maintenance of ACB of 2000Amperes

2073


why impudance relay used for medium transmission power system? why not others?

1471


What is the formula to calculate the rating of a three phase air circuit breaker

2324


why core is useful for a transformer ?and also in its operation ?

2099