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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,

3610

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

1376

specify the inbuilt protections in DG

1155

Explain the function of VFD

15252

witch pump used in wtp

1125

which pump used in STP

1174

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?

931

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?

1962

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

1050

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

2696

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

1113

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?

4893

what is EP panel and AHS panel

3067

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

4855

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.

9326

Un-Answered Questions { Electrical Engineering }

Why do we use center tap transformer that used with portable tools

1317

1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?

1066

can u give me a brief idea about power line carrier communication ??

1002

Why syn. Generators are used for the production of electricity?

170

I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

685

What is core CT & it's function?

1227

What shall be the secondary output voltage if the primary winding of a 220/6V, 50 Hz transformer is energized by an 110V, 60 Hz supply?

203

How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.

1102

What is the minimum underground tank size capacity considered for firefighting purpose?

1014

What is open delta Xformer? It's adavntages & Use?

1187

If not into production, how far did you follow the design and why did not you see it into production?

1160

what is load vs Torque curve & why it is used?

1078

IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.

971

What is the armature mmf in a D.C machine?

285

what is meant by rotating magnetic filed

1031