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 Should be the value of Vector Surge angle at Tripping and how to calculate it?

2024

can any one tell in easy method for circulating current ??

Quest,

2080

delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

1961

how withstand of hi-pot test outputs of transformer wire 2.5mm

1926

what is the role of frequency in electrical system

Hindalco,

2 7577

what is function of reactor coil in Power factor correction panel

1 4116

what is stepping motor and where can use in electrical installation.

3 4989

What is spill current in protection relays?

1 3899

If the load is 10Kw and power factor has to improve from 0.5 to 0.8,how can we select the capacitor rating accordingly.Illustrate by showing formula?

9 12074

If the capacity of water Tank is 50000 Liters situated at 20 meters height from ground level,What would be the size of pipe and how much USGPH water will be supplied and what will be the motor or pump rating used for this work?Illustrate by showing formula?

1 3903

one hp 3phase motor what generate power factor

1 4075

i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1746

hi i have a 400kva transformer i want to know the test i can use to check on it thx

1 4230

what r the tests on the 3 phase transformers can any one explain how to test using megger on transformers thx

2 5381

In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?

2 4273

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Un-Answered Questions { Electrical Engineering }

What is Traction? 1KVA Alternator, How much urrent taken?

2064

description with working of all parts of a Diesel generator???????

2404

can we find the inductance of a induction motor?

1926

What is transmittance?

1080

HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3910

describe the phenomena of vacuum interruption in C.B

1739

WHAT IS LOAD CELL

2099

how i calculate the syncrones generator NGR resistance .if we have a 6mw generator line voltage of generator 11kv also line current 393.3 ampere.

2061

What OPGW is better than Microwave or PLCC???

4093

how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????

2796

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1301

Draw a SLD of DG distribution up to main LT panel?

9432

what is the relation between size of the anteena and wavelenghth of radiated wave

2137

what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?

1874

RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?

2032

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