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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

1 kva how much amps? How to calculate ?

L&T,

2 8698

in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

1857

which is the best institute for PLC,SCADA,DCS in hyderabad

2355

WHY SPEAKER OUTPUT IN WATTS??

2 4333

if we give 60 hz single phase supply to the transformer used in europe , than what will happen

Core Logic,

1942

Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.

2 4620

which will glow brighter?bulb 1 (110v,100w) and bulb 2 (230v.200w) series connection

EnPower India,

6 8704

Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments

Jindal,

5 7921

Why is the earth fault relay connected to the Yellow Phase?

4 9987

why extension in transmission tower is made?

1 4225

what is the different between counterpoise earthing and pipe earthing?

1 9932

In case of motor Power Factor Generally We Apply A Capacitor But How Can We Know That A Motor is Running On Very low Power Factor And What Rating Of Capacitor We Have To Place And Tell Me Conversion Of Micro Farad to KVAR>

2 3918

do we convert single phase line to three phase at minimum cost?

1 3931

Is it possible to control the power in transmission lines by remote controlling method?? if yes explain in details???

1 3310

why the blede and jow of isoletor demage in substation?explan.

1 3331

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Un-Answered Questions { Electrical Engineering }

what is difference between 5A and 100A CT constructional wise and operation?

3570

What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?

999

WHAT IS DEAD END IN PROTECTION?

2590

i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

1900

neutral earth resistance testing is it possible for transformer while in load condition

1945

if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

1840

What is the emf equation of a transformer?

1255

What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

1729

What is the earth treantment procedure?

2076

For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

1827

What is the difference between a fuse and a breaker?

1140

How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current

1557

how to calculate single phase motor efficiency ?

2209

what percent do you derate your copper wire when you change from copper buss to copper wire

1991

What is the basic principle of welding process?

2147

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