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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Which starter can be used for 3 phase verriable speed (2 stator wdg) induction motor ?

2 4794

What is the principle of Excitation.

1 4155

why electron not flow in open loop,how they know path is open ?

3 5539

what is the operation of UPS ? can any one answer me?

7 9085

UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 5908

why we need to us lenz's law for synchornous motor

Tata Elxsi,

2529

what happens when reactive power increases ? does the reactive power loss increase or decrease ?

2 6576

how can calculate 1kva generator running time in 1 liter keroscene

Kirloskar,

2573

In brushless excitation system how generator field current is measure even if the slip rings are absent?

Adani,

3 8846

In three phase energymeter the spindle rotating backward why?

1 3427

what is the use of neutral displacement relay

OCL,

1 28399

How can we check ELCB trip current sensitivity How can we check earth resistance value

2 17774

The DC current waveform is - . What about the fire alarm waveform?

1 3580

if a single phase 3 hp submersible pump of Crompton Greaves is moving in reverse direction and sometimes it moves in rigth direction ,then what may be the cause....

Crompton Greaves,

2 7800

What is meant by rating error prevention in breaker??

L&T,

1 4149

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Un-Answered Questions { Electrical Engineering }

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2743

In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

1953

How will you define capacitance?

1114

how to deside the capacity of chock for drive?

2013

by what factor the starting current is used when comparing star and delta connection for motor starting?

2036

what is the difference between pvc & fiber glass cables

1520

how current is reverse from its normal direction during the fault?

2410

Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

2094

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1887

what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

9017

What is phase cross over frequency?

1076

Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

1140

A jet of fluid strikes a plate What was the force required to counter it?

1840

I completed my BE EEE degree 2006 .... which license should i apply .... ?????

1646

Motor,transformers,capacitor tubelight etc....

1592

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