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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 6823

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

Siemens, UPL,

2 6757

What is OLTC in transformers and what is its function?

4 7861

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

1 5435

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 26562

What is meant by Active and reactive power?

Siemens,

5 8793

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

Siemens,

2220

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 18474

What are the reasons for AVR failure in LT DGsets ?

2 7799

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

2 5318

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

1 6673

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

3 5155

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

3 6028

What is servo motor? what is its purpose?

2010

What are the disadvantges of leading power factor

5 8177


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What is lc oscillator?

1147


if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1870


Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.

2469


If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..

2456


what is the soft starter principle? how is connection diagram? what is the procedure for checking the connection?

2129


Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.

1973


How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

1710


what is the eight bit unit?

2406


1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

8037


Why does amplifier gain reduce?

1020


Operation of isolators.

1847


are there rmu for 3 transformer?

1847


WHY BREAKER ARE USED IN SUBSTATIONS?

2186


at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?

2089


difference between crane drive and line drive.

1860