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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 4581

Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

NTPC,

1076

how to calculate overall efficiency of diesel generator set? give us a formula with an example.

2 7673

To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?

1095

what is humming noise and wha is the reason to develop humming noise in a mv pannel ?

HPL,

2 3413

why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?

1031

what is the purpose of interpose t/f in control and relay ckts?

2 3120

what will happen when reverse reactive power occurs in alternators?

Reliance,

3 17873

how capacitor buield up the voltage

3 4006

what is the diff. between AVR & H.T.Stabilizer

2 3799

difine electrical ballast in HPSVL

1179

what is the clear formula to calculate cable size for a load

TCS,

1070

what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW

7311

What happens to an electric motor if it has poor or no ventilation. Will it burn out? If it will, how long it will run before it burn out?

GMC,

5 4644

Why we should not parallel the with EB

1 1300


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Un-Answered Questions { Electrical Engineering }

Why negative feedback is preferred in the control system?

380


hr round

1272


How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?

1296


How to calculat the ratio of HT\LT in energy meter

1282


how can we change the phase angle b/w two phase?

3212






If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer

1802


HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

1262


How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?

1166


what will happen reduce the transformer voltage from 415v to 406v, is it save the energy,? are this methodis good to reduce the energy.?

715


HOW DOES THE ELECTRONIC ENERGY METER WORKS?

1234


sail kaott diploma ece ke interviw me qus.kis parkar ke aate hai aur G.S me kya puchate hai kya sameedyaan me kis parkar ke qu.puchate hai

2448


What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?

1027


i need to give section engineer (electrical engineer) for RRB. Please suggest some book

1062


can i connect wavetrap in 2 different phase in EHV line?

1006


i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

1527