Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain

172

Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

166

our plant maximum demand has 500 kva.need to suggest me to maintained pf 0.98.how much capacitor bank will be connect to the supply line.

1 327




How to calculate or formula to calculate rhe power in 2 phase system ??

207

The knee point of a current transformer is normally unique and known.So why in the nameplate of a CT they put the minimum value like this Vk> 400v.

150

What is the function of the generator exciter?

161

what is current overloading in stack

223

Railway Basic electrical engg technical question with answer

Indian Railways,

1 306




What is the minimum distance to be maintained in between HT panel and LT panel and Instrument panel as per IEC and NEC standards?

220

Can we use 230VAC, 63A MCB for 120VAC, 63A supplied heaters load?

204

Application of statically induced emf

814

Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

235

What is formula of capacitor for 1-phase power connection.how to improve PF. Suppose I want to connect capacitor in refrigerator to reduce power consumptions.

212

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

213

when ID fan will immediately stop through VFD what exactly cause and problem the ID fan

172


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Un-Answered Questions { Electrical Engineering }

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

581


Explain about Leakage Test.

672


what is the difference between RMS & TRUE RMS VOLTAGE

1619


What are the protection required for Transformer, motor, Line, Generator, capacitor, that all i have to refer which standard?(Like Transformer detail IS 2026)

682


what is the safety points of vaccum circuit breaker.

844






How isolater function when installed inelectrical 440V wiring

835


wheather the size of windings in motor and generator are the same

759


Which thing is maximum in RLC circuit at resonance a)power consumption b)inductive current c)capacitive voltage

507


why we not used 11kva as a direct our electrnics component.

1549


can indirect loading be called as phantom loading?

722


Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP.

6941


how is the testing of an REF relay? what are the test REF circuit having?

711


why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?

1085


How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

853


How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

546