Interested to Buy Any Domain ? << Click Here >> for more details...
why do we use UPF watt meter in short circuit test of the
transformer and LPF watt meter in open circuit test of the
transformer
- 2 Answers
- 33913 Views
- Bell, TCS, I also Faced
- E-Mail Answers
Answer Posted / abhishek
if you calculate the power factor in the no load test conducted you will get a lower value (.2 to .5). In blocked rotor test or in load test the power factor will be usually higher if you calculate (around 0.7 to 0.8). So we use lpf and upf wattmeter respectively.
| Is This Answer Correct ? | 4 Yes | 7 No |
Post New Answer View All Answers
What is the exact minimum vale of voltage between an earth and netural which can damage or can do malfunction of the electronic equipments ? If this is mentioned in any book, pl.give reference.
How to calculate the phase to phase clearness of HT /// LT bus bar?????
please write motor, transformer, Generator setting, fault level calculation of Tr.etc
If rotor works in clock wise what happens
WHY THE RATINGS OF THE TRANSFORMER IS 33KV WHY NOT OTHER???
plz send me the placement interview question and answers of whizchip(technical and apttitude)..i have an interview in next.
How do we calculate over and under frequency tolerance from generator data?
What is the meaning of HT Trivector Meter ?
Can we transmit digital signal to long distance ?
What is the real function of reverse power relay in generator panel while syncronising?
how current is reverse from its normal direction during the fault?
A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?
What is the permissible maximum flux density in transformer core?
Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???
why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?
