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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 4393

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

Siemens, UPL,

2 4067

What is OLTC in transformers and what is its function?

4 4832

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

1 4174

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 19293

What is meant by Active and reactive power?

Siemens,

5 5174

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

Siemens,

1332

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 16051

What are the reasons for AVR failure in LT DGsets ?

2 5715

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

2 3597

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

1 5268

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

3 2805

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

3 3294

What is servo motor? what is its purpose?

1111

What are the disadvantges of leading power factor

5 4704


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Un-Answered Questions { Electrical Engineering }

How can ou verify the size of conductor 50Sq.mm ACSR

912


at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

718


what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

1023


which is the best institute for PLC,SCADA,DCS in hyderabad

1378


what is settable hystersis protection? If any body knows plz kindly post the answer..

1053






A d.c. Shunt motor is found suitable to drive fans because they require?

161


What is Traction? 1KVA Alternator, How much urrent taken?

1122


Explain how you intend to work under pressure to meet up with deadline target?

4165


what is protection class current transformer.

2758


howmany electrician should maintain for a 1000 kva used plant... in kerala..

1113


Brief working principle of stabilizer,application & safety precautions

4631


what the principle of sincroscope?how it works?when it needed?

1268


Explain how to determine capacitor tolerance codes?

155


Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?

585


How many types of fault occur in a 3-phase power system?

155