Question

A 1000 kva transformer has a reactance of 5%. Its reactance at 2000 kva base is

Answer 1

Answer:

it will be 10 % reactance

Answer 2

Given,

Rated kV A = 1000 kV A

Percentage reactance at rated kV A = 5%

Base kV A = 2000 kV A

To find,

Percentage reactance at base kV A

Solution,

We can simply solve the numerical problem by the following process.

The conversion can be effected by using the following relation;

⇒ Percentage reactance at base kV A = $\frac{base}{rated}$ * % reactance at rated kV A

                                                                 =  $\frac{2000}{1000} * 5$ %

                                                                 = 10%

Thus,

The percentage reactance at base kV A is 10%.