Electrical Engineering Interview Questions

1.What is effect of capitance in transmission line? 2. After raising the voltage at receiving end what will be happen? 3.how we nullify or control the raised voltage at receiving end?

NTPC,

4744

how does an centrifugal and screw type chiller will work. which chiller efficiency is high and why.

1843

specify the inbuilt protections in DG

1625

Explain the function of VFD

18544

witch pump used in wtp

1630

which pump used in STP

1669

What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

1475

How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

2467

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

1533

while conducting an experiment why we connect the armature rheostat in maximum position and field rheostat in minimum position

3446

What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

1587

How to calculate cable size for a particular load? i have 12 MW,11KV Motor 3 Phase, what should be cablesize? What are the points to remember for cable sizing calculations?

5841

what is EP panel and AHS panel

4071

we have two 11/.433 kv. distribution Transformer rating as 1000 kva & 500 kva , i wants to run parallel both transformer. both transformer impendence voltage is 5.24%, How can we run both t/f, & how sharing the load

6035

i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

12017

Un-Answered Questions { Electrical Engineering }

what irequirment need to be followed when working on live equipment

1316

What is the difference between amorphous core transformer and CRGO core transformer?.

3181

which of the following elements is not present in stainless steel

2032

is all the servo motors having brake?please specify which servo motors having brake for stop on position and which are not.

1325

What are the material used for resistor?

640

Why we find the sensitivity for the CT's to check?

1421

What is cross over distortion? How it can be eliminated?

786

How does an induction motor start?

747

why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc

2007

Why HT 11 KV Slipring Motors are connected in star ?

1777

how could we know the size of cable by physical view?

1227

State the points to be considered for selecting a particular type wiring.

1641

why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?

1476

we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

1640

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

2019