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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why in India only 50hz frequency not 60hz

Prism Cement,

2 4153

how to reduce shorting current in a slipring induction motor

3 3667

why we are using KVA rating for transformer,not KWh rating?

NTS,

5 5461

What is the function of mid point voltage in battery bank

Jindal Steel and Power,

1 4947

11000volt DG set carnt kaise banvay

AVK,

1635

what is the function of DC panel in substation?

4 5703

Why 1500 rpm of deasel generator please explain to me?

Integral BioSciences,

1 2608

What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?

XX,

1750

What was the Dg set radiator and lube oil temperatures trip in ACB

Gland Pharma,

1789

In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?

1657

In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?

1929

Why diesel tank kept in 990 ltrs

Reliance,

1 3825

How to reduce -234126219.6403 MVAr generation and by what?

1590

What is cp system and why is it required.?

Essar,

1 2731

If a capacitor bank is having rating 750kvar for 6.6kv. Then for 3.3kv how much will be the rating of capacitor bank.

OCL,

1 2934

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Un-Answered Questions { Electrical Engineering }

What is meant by celling voltage & current in excitor ?

2031

My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

2062

what is difference between window type and wound type transformers?where we will use window type and wound type transformers?

2139

how to calculation increase power factor for single phase

2262

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

1391

WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

2025

What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)

2112

What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

1832

my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.

2013

what is the diference between the 4pole & 6pole DC Motors & what is advantage 6pole over the 4pole ?

1969

description about dry type transformers

1851

how to determine the inrush current of a transformer

2575

how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?

2128

R=*¶ l/a

1582

How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?

4233

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