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 THE TRANSFORMER VALUE MEASURES IN KVA INSTEAD OF KW.

4 7411

why do transformer humm ??????????

2 5121

if we use contactor & MCCB both in a feeder.in this feeder rating of contactor is higher or lower or same of MCCB rating & why?

1 3657

what is difference between MCB & MCCB

1 5073

WHAT IS REMOTE CONTROLLED DG? WHAT IS DIFFERENCE BETWEEN REMOTE CONTROLLED DG & NORMAL DG SETS

2 5203

how to calculate the size of cable tray

3 13286

what is the difference between online and offline UPS?

Prestige,

4 11783

Upload data by LSMW via BAPI in SAP system.

1 5683

the power consumption of perminant magnet moving coil?

1 3183

what material used made for the resistance,for the purpose of zero temperature coefficient?

2 4933

A 3PH MOTOR RUNNING IN NORMAL CONDITION AND ITS AMPERE ALSO UNDER ITS FULL LOAD CURRENT,ITS CABLE RATINGS ALSO HIGER THN ITS CAPACITY,BUT ITS CABLE GETTING ABNORMAL HEAT(NOT TOO HOT)WHY ITS GETTING HOT LIK THIS?

5 7259

2 3810

why open-delta core of 11kv Potential Transformer is 11000v/1.732/110/3?

1 6988

whats was the problem if neutral and earth got 2volt from the ups output

1 3685

SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

2 6842

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Un-Answered Questions { Electrical Engineering }

how to determine the inrush current of a transformer

2611

Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1734

DG SET BLOCK DIGRAM

2288

Explain the working of variable frequency transformer?

1153

I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

1932

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

1662

ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant

6318

Why is negative feedback invariably preferred in closed loop system?

2310

what is the difference between fault current ant short circuit current?

2701

How does a transformer contribute towards the widespread popularity of ac system over dc?

1103

what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.

5542

I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1873

11KV AND 22KV NETWORK KW CAPACITY IN RING AND RADIAL?

1996

What happen in ups if phase reverse?

2288

what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field

2017

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