why transformer ratings in kva?
Answer Posted / jjj
There are 2 losses in transformer. One is copper loss which depends on current and the other is iron loss which depends on voltage. These two factors are not affected by the power factor. This is why transformers are rated in KVA and not KW. Single phase KVA = Amps x Volts/1000. Single phase KW = Amps x Volts x pf/1000. 3 phase KVA = Amps x Volts x 1.73/1000. 3 phase KW = Amps x Volts x 1.73 x pf/1000.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)
how to calculate the conductor size for certain KV transmission line and distribution line?
What are the types of power in electrical power?
How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?
what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
advantages & disadvantages of Lagging and leading power factor .
hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com
why three phase capacitor takes unbalanced current in capacitor bank?
How to synchronization will be done between two DGs ?
What is the Difference between Ac Drives and Dc Drives? According to application, speed, Torque, cost, Reliability, Construction, Motor etc... Thankyou !!!
explain remenance . differentiate high remenance type ct & low remenance type ct
how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)
How do u analyse protection fault when vcb tripping on load
in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?