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 3991

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 6132

what is the difference between circular wdg & ractangular wdg?

2056

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=?

2558

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 4397

Difference between Earthing Truck & Earthing trolly for HT panel

Moolchand Medcity,

4398

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

1941

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

1934

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,

1803

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

1846

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

2154

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Un-Answered Questions { Electrical Engineering }

In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

1977

How would you calculate power loss in a resistor?

1073

What is the effect of pd controller on system performance?

1114

What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

1713

whats the application of voltage regulation? and whats the voltage regulation's device?

1892

why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?

1816

how to calculate energy of 3-phase motor?

2078

Is electro plating what type of load whether resistive, inductive or capacitive loads

3324

What information we need to prepare relay coordination chart

2341

i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

2208

what is the significance of tan&delta and how it performed in power transformer

1933

What are the types of power in electrical power?

1212

Where can i get practical knowledge of solar system?

1451

75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

3725

acb(AIR CIRCUIT BREAKER)NOT CHARGING AUTO

2398

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