Question

A 50 KVA, 440/110 V single phase transformer has an iron loss of 250
W. With the secondary windings short circuited full load current flow in
the windings when 25 V is applied to the primary, and the power input
being 500 W. For this transformer determine the fraction of full load at
which the efficiency is maximum.

Answer 1

Explanation:

A 50 KVA, 440/110 V single phase transformer has an iron loss of 250

W. With the secondary windings short circuited full load current flow in

the windings when 25 V is applied to the primary, and the power input

being 500 W. For this transformer determine the fraction of full load at

which the efficiency is maximum.