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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between real and reactive power? and what is the importance of these

3 5074

PLZ EXPLAIN THE INTERLOCKING AND CONTROLLING OF CONTACTORS????HOW CAN I DO THAT?

Siemens, UPL,

2 5144

What is OLTC in transformers and what is its function?

4 5783

Is there any thumb rule for cable selection for any current rating ?

1 4564

a room heater is connected in serise with a 100w bulb.if the 100w bulb is replaced by a 40w bulb then the output of the heater is increase/decrease/remain same?

College School Exams Tests,

9 22498

What is meant by Active and reactive power?

Siemens,

5 6423

What is difference between start imitation and start interlock for 3 phase motor protection ?

Siemens,

1630

what is the principle of generator, motor, and transformer and explain the definiton of flemings left hand rule , right hand rule and ohms law

NFCL,

2 16680

What are the reasons for AVR failure in LT DGsets ?

2 6378

Why breakers not synchronized when the synchroscope is going in the anticlockwise direction?

2 4169

why phase to phase voltage is 400v while phase to neutral is 220v?

1 5725

How many earthing pits are requier to disapper the surge current of one lighting arrester.

3 3557

Is it necessary to place tap changer in secondary winding or we can use on both sides?

3 3969

What is servo motor? what is its purpose?

1414

What are the disadvantges of leading power factor

5 5685


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Un-Answered Questions { Electrical Engineering }

Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???

1275


How many types of faults are there in 3 phase power system?

473


Why is ignitor used in sodium vapour lamp

2648


What is an 86-P or an 86-A trip

1370


what is the current setting for different relay protection for transformer .

1564






how to decide no of electrodes for 1600A LT Main incomer panel

1014


What is dynamo?How it works and what is the function of dynamo in a DG.

1924


checking procedure of capacitor based motors.used in fans etc?

1445


what is the constructional difference between a power transformer and potentian transformer?

1091


Do closed loop systems require manual input?

487


what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

1598


What is clock position of Transformer?what are the clock positions are there?and what is different of them?

2437


What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

544


tell me some type of questions throught which i can prepare for exam and do my best

1385


what is conductor copnstant of ab cable

1137