why the rating of transformer in only KVA not in others?

Answer Posted / khalid

because of transformer winding losses
winding loses are a reactive power reactive power is add
in active power so the rating of T.F in KVA
KVA = Apparent power
KVA =KW+KVAR
Apparent power =Active power+reactive Power

Is This Answer Correct ?    0 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why should be the frequency 50 hz 60hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 hz 60hz?

700


what is the constructional difference between a power transformer and potentian transformer?

1257


While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens

1585


A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

1340


Which type of a.c motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses ?

588






what is difference between speed mode and torque mode in motor?? explain in simple words please.

1150


How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.

1861


wow to calculate the transformer rating(KVA)

1674


What is the most accurate way of testing ELCB?ELCB is better than RCD?

2873


In the magnetic fluxes, what is the role of armature reaction?

689


How to calculate multiplying factor of dc energy meter

1204


Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

1503


how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?

4826


What are the material used for resistor?

628


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1533