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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Can the Neutral and Body Earthpits of a transformer conncted together by Earth strips under ground.

SanDisk,

4 14812

What is the battery voltage limit

3 5432

How much load with stand the copper cable by sq mm apro..

L&T, Taj Group,

1 5039

why use generator Earthing/Graunding.

4 9381

what is earthing.how we make it,describe briefly.

HAL,

2621

If one 10 Hp 3phase induction motor connected in 380volt 50Hz. and again its connected to 380volt 60Hz. howmuch currrent and power take on both time?????

1 5013

how to calculate AH of a battery?

Exide,

8 50585

define digital electronic

1984

Can any one explain me about 2 phase motors ?

L&T,

2 5589

What is the difference between Isolator & Load Break Switch?

Infotech,

7 50778

does a DG set has low fault level as compared to that of a transformer.If yes then why.

1983

what happenes if the core of the transformer saturates?

4 8371

1.In two wattmeter method if one wattmeter shows Negative reading then wat is reason? 2.Wat is the reason for low voltage in houses? 3.Wat is meant by current and voltage? wat is difference between the two?

Engineering,

10 66289

what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.

Mepax, NEPCO,

2429

how to calculate the no. of earth pits required for an electrical installation?

Mepax,

1 7178

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Un-Answered Questions { Electrical Engineering }

how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

1910

explain the Trip supervision circuit

2152

i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good

2149

What is center gravity load in substation?

2423

WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?

1759

If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.

1078

What if the difference beween internal and exrteranal LBB?

1676

What is mean by hot and cold loop testing? What is the difference between them?

1125

please send me the L&T Emb. sys. placement papers and entire details of pattren

2329

Why is a plain induction motor unsuitable for wide speed control?

2275

how to avoid Saturation in C.T?

2119

why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)

1906

state the working principle of incondenscent tube?

1938

Difference between On Line capacitor and Station Type capacitor.

2044

1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating

1765

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