Answer Posted / gowhar
The above answer is true.Moreover ,there is a two stage
forced cooling in some of the transformer
(ONAN/ONAF1/ONAF2.on First stage forced cooling(ONAF1) the
MVA rating increses 33% of the actual rating and on second
stage cooling(ONAF1) MVA rating increases to 66% of the
actual rating.
| Is This Answer Correct ? | 98 Yes | 34 No |
Post New Answer View All Answers
how we can adjust for three phase motor cold stall time ,hot stall time and thermal register set up?
What is capacitance?
Name the component u would expect to find in a switchgear assembly?
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
What is touch potential and step potential?
What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors?
after how many spot we must chang secondry cable in portable spot welding gun?
what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?
How much minimum insulation required between 11kv/3.3kv transformer windings?
what is under coal gassification?
send me all basic electrical question and answers
What is routh hurwitz stability criterion?
why is the power generator connected as star earthed or star earthed through reactance and what its features ?
How will polarity test of Dy5 Transformer ?
Why let through energy not considered for ACB breaker while cable sizing?