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Electrical Engineering Interview Questions

234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

1373

current and voltage equations for a star connected load fed from a delta connected load.

3159

what is the maximim current drawn by 1 phase and three phase welding machine

1297

what is power factor for any engineering equipment?? what should be its value?

ETA,

4186

how to calculate capacitor rating for an induction transformer ex.for 12 mva furnace calculate capacitor rating

4423

How we can make sure cable size of LT cable without any parameter.

5483

what is the meaning of knee point in current transformer and how to calculate?

5627

234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

1488

63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?

GSECL, L&T,

2121

i have installed my solar site of 6.7kw and is working perfectly , can somebody tell me that how can i measure my solar irradiation kw/day/sq m ?

3207

our scope called one core cable for distribution system so we like to use 4 core cable with one equipment grounding conductor so what kind of technical reasons i can say that the 4core is better then 1 core,

2956

how to calculate busbar size? if ex:1000amps i need to calculate busbar size and what size of bar?if any example caculation pls give the formulas.

4292

what are the components of a start and stop motor control?

2895

In my project i am layout cables under the Maintainance bay /Maintainance yard in the TG Building. Whether in this route i can lay the H.T.Cables??? i am taking all H.T cables from the H.T Transformer to the TG Building..

2045

why we use ac system in india why not dc

7500

Un-Answered Questions { Electrical Engineering }

Single line digram for 11 kV to distribution use go,la and do

1080

i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

1314

please explain to me how to calculate current,voltage,resistance with formula??

774

How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

1301

What do you mean by cogeneration? What its working principle?

2575

What is the difference between line drop and percentage line drop?

897

how 650 volts creates? where is use?

1535

Why do not we prefer non conventional sources of energy to conventional sources?

502

what is High resistance grounding and whatis the criteria for the selection of High resistance grounding

1492

how electrical earthing maintenance done in industry?

821

operation of protection relay watchdog contact?

1763

what is the need to express current and voltage in rms value? rms value is also called as effective value,what is effective value?

1328

how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.

1468

Differentiate between voltage and current feedback in amplifiers?

485

Testing report of Earthing of 3.15 MVa PTR.

1900