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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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 4073

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

Voltas,

1 4746

What are reasond for high wattage in single phase induction motors

1842

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

3 6300

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

1 2700

What is rccb?

1 4788

what happends when an isolater is operated on on-load

1 4502

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?

1681

why current is constant on d.c?

2046

what will happen if frequency is below 50 hz?

Student,

1966

distribution transformer de-rating formula on over limit iron losses  

IESCO,

2256

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 4098

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

NTPC,

1 4950

what is power factor?

3 6316

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

L&T, NMDC,

1 7204


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How to choose size of the cable w.r.to current carrying capacity ...

2166


What is a difference between indoor transformer and outdoor transformer of same rating

5766


I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

1674


What was your role in the silicon evaluation/product ramp? What tools did you use?

1917


How much depth n width required for laying of 1X70 Sqmm Cable in Desert???

1586


why in the three pin plug all 3 pins are cutted ?

1974


Can a generator runs after getting 1st stator earth fault.

1366


Is there any abbrevation for STUB in Stub bus protection

1891


Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.

2099


What are the conditions for sustained oscillator or what is backhouse criterion?

1096


what is a types of short circuit and what is a types of distance protection tests

2213


Earth leakage relay basic knowledge principle

2133


What is meant by reset level of the relay?

1162


why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

1899


i am studying in final year can i allowed for 23rd UES of Indian army

2082