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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the full form of ka (100A mccb KA)

1 3993

can anyone pls expain me about how can we design a cable tray??suppose if have to draw a 3 nos of 50 sqmm AYFY and 2 nos of 35 SQmm of AYFY cable through the tray..how can we design the tray size?? regards...

3 6135

what is the difference between circular wdg & ractangular wdg?

2057

prove that inegration of { e^z / z^2 + pi^2 }dz is equal to i/pi by Cauchy Residue Theorem.

1 3045

if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?

2559

Why ground terminal is used in pot meter 10k ohms

Mahle,

1888

what you mean by transformer neutral earthig

IOCL,

1 5232

I have 2 transformers in two different plants, both are without OLTC but i am facing problem of voltage fluctuation at LV side from only one transformer. i have to change its taps manually twice in a day. Another transformer delivering voltage is ok. Please guide me about the problem

1 4399

Difference between Earthing Truck & Earthing trolly for HT panel

Moolchand Medcity,

4399

How many energy meters can be connected on a 15VA Voltage transformer. please send a calculation sheet.

1943

why not starting switch first connect in direct on line starter?????

1935

when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

ETA,

1805

How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"

1875

The capacitive reactance of a capacitor of 1/(2(PI)) F at 10^3 H is

1849

The power supplied to a 33microF capacitor from a 120V, 60Hz source will be

2156

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Un-Answered Questions { Electrical Engineering }

What do you mean by passive circuit elements and why these are called passive?

1192

what is upper impedance and lower impedance of a distance relay

2040

Why we are use dol starter up to 10 hp

1374

How to select cable the size, what is the parameters use and what is the formulas use for this cable size calculation?

1911

What is meant by RVT and NDR ? expansion and details of it

3035

Why do we require transformer with less specific weight if supply frequency is increased?

1584

If any cable burnt how can we identify it burnt by high current of high voltage?

2451

List some examples of renewable energy?

1205

What are the classifications of heating element?

2046

what is the size of cable for 15kw motor and 85 meter cable length using with vfd

2367

What is vacuum circuit breaker.define with cause and where be use it device?

1308

WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???

2121

What is the difference between electrical earthing and electrical grounding?

1152

What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

2046

how can we design robots

1950

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