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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Multimeter show phase to neutral volt 230 the per phase but phase to phase 415 not show 460 why.

Intas,

1 5805

What happens if we run alternator on under frequency?

SRHHL,

2115

What is the reason that the humming sound is coming from the induction furnace panel?

SKS Microfinance,

2603

40 HP motor how many square mm size wire use for stator to motor & aluminium wire use ?

SSPL,

1 4454

Why capacitor is blow when I am starting motor ?

1 4344

What is ignitor and why it is use in Hpmv lamp ?

2 9448

What mean power grid fail. why power grid fail.

Intas, Tech Mahindra,

1 5765

Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..

2589

lenz law application and define

2836

If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

REM Electromech Pvt Ltd,

2103

how does grading rings & spacers in transmission line works? Working Principle?

2087

why Square root 3 used for three phase?

2 6207

How Grading Rings & spacers in transmission lines works?working principle?

1 4609

how is calculated the quantity of weight in hot test xlpe?

Hirbodan,

2514

I have 3 1000 kva single phase transformers and I wish to replace them with one three phase transformer. What is he kva rating of the new three phase, is it 1000 kva also or 3000 kva.

Central Moloney,

5 8612

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Un-Answered Questions { Electrical Engineering }

in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

2115

high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

2009

How to calculate multiplying factor of dc energy meter

1666

State any two nuclear power stations in India, with their generating capacity.

1892

wHAT IS CAPACITANCE LATCHING? hOW TO CALCULATE CAPACITANCE LATCHING? hOW TO SOLVE THE PROBLEM IF CAPACITANCE LATCHING APPLIED?

2011

If there is major % of Voltage harmonics in the system, how can it be control or reduced?

1990

upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

2146

what is the voltage rating of chiller unit sensors

2774

sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.

1908

what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors

2008

diff. between tension mode & speed mode

2336

If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

2273

how to calculate the change over time for star delta starter for different KW motor?

4228

why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

1796

what is saturation kit?which use above 15 kw motors panel side.

4201

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