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Electrical Engineering Interview Questions
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if our load in 3 phase circuit is 4000 amp. calculate the capacity of capacitor panel if line power factor is.80 .

ST Micro,

1 3383

 where the Motorized mccb to be used? In Motor control center panel starters ,it is use full. please answer  

Voltas,

1 4231

What are reasond for high wattage in single phase induction motors

 1475

why we use 50 hz frequency in india .. why not 60 hz 

 3 5505

Arrangement of earthing materials.like what we put first charcol,then salt.then plate. Plz answer me about that.

 1 2085

What is rccb?

 1 4306

what happends when an isolater is operated on on-load

 1 3756

in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

 1392

why current is constant on d.c?

 1685

what will happen if frequency is below 50 hz?

Student,

1662

distribution transformer de-rating formula on over limit iron losses  

IESCO,

1885

if a train is running on a speed of 40 K MPH and crosses a individual passing by him in 48 secs who is riding a horse with a speed of 25 K MPH. what is the length of the train?

 2 3428

in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

NTPC,

1 4303

what is power factor?

 3 5476

Why we are using LA Rating 10kA in 66 kv substation

L&T, NMDC,

1 6637

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Un-Answered Questions { Electrical Engineering }

A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.

2569

What is the transfer function?

701

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

2140

How to select a contactor? How many types of contactors are available

2828

I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

1754




What does a Bode plot tell you?

912

detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

2714

What is called grain-oriented laminations?

699

what is circuit breaker in transfomer and where it used

802

Pl.brief me about Electrical power distribution system from Main generating station to Industry.What is the use of in between station.

1680

Why GRR starts from 60% of motor speed why not less than 60%?

894

1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai

1503

please tell me when we start motor without load in star or delta connection whose current above condition,pl write formula

1881

he compression ratio for a petrol engine generally lies between

791

Tell me in detail about c.t. And p.t. ?

797

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