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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

Indcoil Transformers, Power Grid,

1896

what is the need of capacitor in transmission lines?and how it works.

SCCL,

2 3735

What is fault.?

AngloGold Ashanti, MNC,

2 3337

why US countries maintains 110v and 60HZ

1580

Is current shock due to voltage or current? pls answer

ABB,

2 5848

why are installed water leakage detection system data centers & server rooms

Reliance,

1654

internally connection of photvoltic module

1279

what is the meaning of 1250 KVA Trasformer

2 4683

What is the power factor,apparent power,reactive power and formula of power factor.

MNC,

3 3933

Why transformer is rated in kva?

L&T, NDPC,

4 6385

What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?

2944

What is difference between potiential,volatge and emf

1 2590

why do mostly prefer to generate and distribute electricity in 3 phase..not in 4 phase or 5 phase.??

BSBK, IOCL, NTPC,

5 7293

If the kvar rating of capacitor bank is 600 kvar at 525V then what it's rating at 415v.

2 4062

When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,

3 3559


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Un-Answered Questions { Electrical Engineering }

How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

1664


Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

1095


What is the formula to calculate distribution transformer De-rating on iron losses basis

1205


What are the advantages of nichols chart?

584


The SFC of an engine is 0.25 kg/kW hr. when the fuel used has a calorific value of 36000 kJ/kg. the thermal efficiency of the engine is

779






what happens to the supply voltage if there is any change in frequency?

5345


What type of core material is used for metering C.T and protection C.T???

1545


On what cycle does thermal power plant operate?

487


What is resistance reading of earth copper rod with grid and without grid?

452


What are hrc fuses and where it is used?

546


What is the control action?

474


Load transfer in 11kv double busbar switchgear - operation.

1290


How to decide whether A / B / C / D curve type MCB should be used?

1671


why cable i burning without tripping. how can protect led street lights

868


I want to do a mini project. Now I'm studying in 6th semis tor EEE Engineering.

1474