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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

Infotech, Vijai Electricals,

3 8965

what is extra low voltage system

3 6341

WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

NTPC,

8 11765

Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?

2 2751

operation of diesel generator

1049

What is Antipumping Function & If we have C.T how we find the Ratio ?

1044

How to Convert Gen KW to H.T amps ?

2 5094

at which voltage level arcing ground is occurs ??????????

TATA,

1060

why test lamp didn't glow across 500v megger?

Aurobindo,

4 4805

why we are testing cables with DC supply not with AC supply?

Aurobindo, DEWA, L&T,

9 21763

What is the Difference Between resistance and resistivity?

Sun Pharma,

2 5230

what is the different between surgearrester and lighting arrester

HPCL,

4 5267

why exterrnal C.T. protection is used even though ACB& VCB is having inbuild C.T. protection?

2 3080

what is the different bitween ETP & WTP

Square Pharma,

1 8307

According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3111


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Un-Answered Questions { Electrical Engineering }

Explain cos(theta) and Sin(theta)

1108


what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.

1311


What do you mean by lighting transformer?

160


'documenˁ

1030


PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

1310






What are the two segments of nyquist contour.

162


what things to be considered when designing UPS

795


why zero sequence impedance measurement is not applicable for single phase GT

1182


at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

715


If a high resistance fault occurs,then what are the changes will happen in the system?

467


what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

1317


would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

1487


what is the earth current,reverse power,electrical trip generator short circuit,low voltage, high voltage please discribe me

1161


dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish

1393


if we give 60 hz single phase supply to the transformer used in europe , than what will happen

1063