Answer / disha rane

In a transformer, the copper losses depend on current and the iron losses depend on voltage. Thus, the total losses depend on volt ampere and not on the phase angle i.e. independent of load pf. Hence rating in kVA and not kW.

Answer / hemalatha doddi

in transformer only voltage and currents will get changes
there is no change of p.f. hence its power is said in kva.

Answer / laxmikanta sasmal

bcoz it's unit is not depend on the power factor of the system.

Answer / viral shah

B'coz load on the trasformer is not decided at the time of
manufacturing.it may be inductive,capacitive or resistive
so p.f. varies accordingly that is why transformer unit is
in KVA.

cc of scorpio?

0 Answers   MAHINDRA,

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If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?

0 Answers   Posco,

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11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

10 Answers   Pfizer,

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what is interfacing in computer studies?

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how to calculate the voltage drop in electrical cable while laying cables?

2 Answers  

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9 Answers   Dalkia, Getco, Gujarat Energy Transmission Corporation Limited GETCO,

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Can we use LT(150 sq. mm) cable in place of HT (120 sq.mm.) cable.?

1 Answers  

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What is the acceptable earth resistance for Commissioning the Transformer?

6 Answers   HSL,

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Wht ar the reason for low voltage on consumer side?

6 Answers  

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why the transformer has no starter

2 Answers   NTPC,

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how can we find CT coil not working ?

7 Answers  

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what is reactive power?

2 Answers   Vestas,

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