Question

A 3 phase 15 kva transformer having 0.85 power Factor with 90% efficiency. Find the power in KW?

A 11475
B 13500
C 12750​

Answer 1

Answer:

For $3$ phase $15kva$ transformer having $0.85$ power factor with $90$% efficiency, the power in KW is $12.75=12750W$

Explanation:

The KVA is the unit of apparent power it represents kilovolt-ampere, it tells you how much apparent power can flow through a transformer.

For a $3$ phase transformer $KVA=\sqrt{3} (Volt*amps)/1000$

From the question, we have $KVA=15$

The power of the transformer can be calculated from the KVA value as follows,

power in KW = KVA(power factor PF)

In the question, it is given that the power factor of the transformer is

$PF=0.85$

Now, the power in KW is =$15(0.85)=12.75KW=12750W$