Electrical Engineering Interview Questions

Why the TNC switch is called as Memory switch

3215

how to understand the controling circuits example star- delta-starter controling daigram please let me know

GMR,

7018

how many earthing should give for transformer body and nuetral

GMR, GOMS,

7586

i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com

1486

Is C.T will sense the current in both direction. As i know the C.T will sense the current in only one direction.

4793

What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

1485

Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)?

4827

How the size of transformer decreases if we increases the frequency?

4353

Can we use delta-star neutral grounded 3 phase power transformer bi-directionally.

GMR,

4448

how to synchronize 3 phase slip ring induction motors of different ratings.

GMR,

1700

can we use existing delta star with neutral grounded,step down(6.6kV/415V), 3 phase power transformer bi-directionally.

GMR,

4835

1.differance between onload ups and off line ups.

CTS,

4893

want happens when a dc is given to a commutator

3772

A three phase transformer 460v primary 220v secondary (three phase four wire system.) Why did we get 460 volts across the neutral on the secondary side?

5419

I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

SPCL,

1951

Un-Answered Questions { Electrical Engineering }

What are the advantages of the three-phase motor over single phase motor?

515

Brief me about maintenance planning & sheduling of machine tool.

1615

How line capacitance & line inductance varies with increase in height tower.

1791

State and define nortonâ€™s theorem?

703

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

1622

what is the difference between electrical choke and electronic choke?

2029

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

1537

what will happen reduce the transformer voltage from 415v to 406v, is it save the energy,? are this methodis good to reduce the energy.?

1032

what is ratio of copper wire size and current ?

1307

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

2614

how we can set the IDMT relay.

1599

importance of reactive power management

1514

What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

1820

i need some project topics along with circuit diagram in the electrical adnd electronics engg and also give ome website regarding projects.my mail id is thenmozhi2k7@gmail.com .please help me.

1373

can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)

1463