Why does the power consumed is always constant even if a fan speed is altered?5 16561
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?899
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?
What is technical difference between ELCB & ELMCB?3 17810
how was the induction stove working?3 3017
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.
Explain the working principle of Vacuum circuit breaker and Air circuit breaker10 39250
Why not using Air circuit breaker at High tension side?1442
What is diference between ELCB & ELMCB?Also how its application for use in design area?2 11137
How can w select the cable size for different rating load & also waht r factors affecting the during selection of cable?11 27068
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 .
wht is the difference between volatge and wattage ? how can it be converted ? (like 15w = 6v ) like tht... ? actually what tht means ?3 3323
neutral earth resistance testing is it possible for transformer while in load condition
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?
What are the different towers used in 132kv transmission line? what are the differences between the P,R,S towers used in 132KV and detailed explanation
How is the percentage impedence of a transformer fixed at design stage???
In my 3 phase 4 wire electrical system N to earth voltage is 0.08 is it ok What is standard for it ?
What is the distance between body earthing and neutral earthing.?
plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id email@example.com
what is electrical machines
DEAR SIR,I GOT THE CALL LETTER FROM RRB, SECUNDERABD AS A JE-II SO PLEASE PROVIDE ME SOME MODEL QUESTION AND ANSWER PAPERS AND LAST YEAR QUESTION PAPERS
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
what is meant by neutral compensation factor and where it is used
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
what is the meaning of 0.5ohm Resistance
what is the relationship between current&voltage in practical purpose ?