Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is VFD and how to save the power by using VFD?

7 10800

How I design capacitor bank for different load.7MW connected load.

Samtel,

3 7925

its Kva and Kv are same?

3 6425

If one d.g. is unable to take full load of system, then second d.g. will take care of partly Load.for this condition RPM of both DG set should be equal.By using Synchronization panel RPM of dg sets are match, is it true?

1 3894

1500Ah VRLA battery,if its weight is designed 125kg during maufacturing its weight is reduced to 85kgs,What will be impact on AH capacity,life & economy?

Bajaj,

2210

why in motors dc extitaedtion is prefer

1 2467

The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedance is 10.07%. As per the calculation the secondary current is 1312.2Amps. The maximum fault current the transformer should sustain is 13.030KA. How many times the transformer should sustain the maximum short circuit current of 13.030KA over a period up 1 Year. The transformer is repaired one & 10 Years old.

1 9435

How to derive detailed design of Suitable bus Bar for 100A for 6.6KV?

1808

Why in Digital Megger for finding Insulation resistance,-ve is applied to core or conductor and +ve is applied to ground.

ACC,

1 3910

During Millivolt drop test current leads are applied in the extreme ends and voltage leads are given just before the current leads.. what will be the difference if voltage leads are given in the extreme ends? and why?

1 6725

why we use MV panels??? what's r all the needs

4 18852

What is the difference between generator and turbo generator - related to power gereration

1 5712

what is the advantage of NiCd battery over Lead acid battery?

1 4139

The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.

1985

what will happen while giving 2 phase supply to 3 phase motor

5 7111

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Un-Answered Questions { Electrical Engineering }

List some examples of renewable energy?

1205

How the PF control while running DG set with load

2180

How to calculate the size of earth cable to earth the neutral of UPS ?

1937

Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

3353

What are the types of windings according to the construction?

1119

Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?

2100

What are the main significances of root locus?

1233

hi friends if you have any 400KV Substation Erection and installations Drgs please send to me.My email id:kandi.suresh441@gmail.com

2917

1sq mm dc powr cable can carry how much dc currnt

2064

What is the simplest formula to calculate the rotor diameter of a synchronous generator?

2449

how can calculate 1kva generator running time in 1 liter keroscene

2614

SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS

6842

Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?

2092

what is reactive power?, why its measured in VA ? is it transient behavior of system?

2299

Operation of isolators.

1894

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