Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why induction motor can not be operated at synchronous speed?? what would happen if it is operated at synchronous speed??

5 24365

can we coorect P.F. OF 320 KVA ALTERNATOR AT LOCAL SITE WITH RATED .8 PF LAGGING.

1 2854

sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

L&T,

5 11171

what can be the causes of capacitor start motor having a higher current that its actual

1595

How to calculate per unit impedance of transformer?

1657

Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?

5 6043

what is meant by phase transformation ratio in induction motors?

2 14251

why generator one end side star neutral point given? if this point not given what happen?

1 3515

what happen if turbine trip ,g.c.b not open and excitation on condition?

1 4347

what happen if steam turbine trip,g.c.b not open and excitation off and on condition?

1 3700

why capacitor is not discharged phase to body

1 2938

Why the electron flow in reverse of current.

6 7963

What is the function of an Auto reclosure relay. How does it work??

KSEB,

4 16888

What is EHT tariff or Power factor Tariff ????

KSEB,

1992

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

SISL,

1602


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Un-Answered Questions { Electrical Engineering }

How seriving & testing of the HT & LT breakers are done. What are the standard Ir values on which we can come to know the test is passed or failed?

1615


Differentiate between low pass, high pass and band pass filter?

705


what is the meaning of 5% droop or 7% droop in AVR?

1977


what is the function of choke in the flourcent tube lights and why the colour is in white mostly in flourcent tube lights

1554


how to select rating of HT Panel

1022






what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..

1740


According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?

1530


where are the circulat the diesel in DG parts name with pictue

1735


in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

1543


Connection diagram for KW meter and  Kva meter

1864


What is meant by coupling capacitor?

731


1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

2392


State angle criterion.

734


at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

1439


What is The Resistance Formula

873