Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why does the power consumed is always constant even if a fan speed is altered?

5 16757

WHAT IS THE DIFFERENCE B/WDYNAMO&ALTERNATOR?

IOCL,

6 5401

lllg,llg,ll,lg,lll which fault is severe and why?

GE, PSC, COEP,

10 45492




why we use ac?why we use dc? why we we cannot use only ac/dc for all the applications?what happen if we use?

935

what is the difference between current rating and breaking current of an MCCB? and for a known load how to calculate the current rating of a MCCB?

HPL,

1 3719

What is technical difference between ELCB & ELMCB?

3 18455

how was the induction stove working?

3 3058

hi i m going to attend bhel interview on 22nd sep 2008 for ET(electrical engineering).pls guide me how to prepare for the interview.i am a fresher.

Bhel,

1 2271




Explain the working principle of Vacuum circuit breaker and Air circuit breaker

HP, Trinidad and Tobago Electricity Commission T TEC,

10 39725

Why not using Air circuit breaker at High tension side?

Wipro,

1476

What is diference between ELCB & ELMCB?Also how its application for use in design area?

2 11552

How can w select the cable size for different rating load & also waht r factors affecting the during selection of cable?

Bosch, AB Inc, BRB Cable, Lucas TVS, Trisome Technical Services,

11 27336

wht is this amps in power consuption and how can we convert that into consuption hours ? i am a sales executive of a energy saving lamps .

KSEB,

5 3634

wht is the difference between volatge and wattage ? how can it be converted ? (like 15w = 6v ) like tht... ? actually what tht means ?

3 3365

what is the fullform of mccb

Thermax,

10 13398


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Un-Answered Questions { Electrical Engineering }

how to check avr of dg set of 125kva

1150


I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

14174


any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

362


i have attended the interview on 4th June,08 at Kolkata in IOCL, can anybody tell me what is its result

763


Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me

721






What is a fuse? How does it work? What are materials used?

663


How can get elongation of 2 k.G aluminium, if elongated aluminium dia is 2.5 mm?

862


Please brief what is sinewave

783


Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?

150


3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

1294


what is meant by class 1 E in electrical power supply?

713


How we can calculate the life of Lead acid battery

420


sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

184


What is super thermal power plant? and how it will differ from normal thermal power plant

1012


what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?

569