Question

A power line feeds input power at 230v to a step down transformer with its primary winding having 400 turns .? What should be thenu.Comber of turns in the secondary in order to get output power at 230v ? If power effeciency is .7 & secondary current of 5ampere find secondary current

Answer 1

Answer:

400

Explanation:

Given: The input voltage to the transformer is 2300V

The number of turns in primary windings is 4000 turns

The output voltage of the transformer is 230 V

To find: The number of turns in the secondary coil.

The number of turns in the secondary coil is given by:

V

2

V

1

=

n

2

n

1

n

1

=4000; V

2

=230; V

1

=2300

n

2

=

V

1

n

1

×V

2

⇒n

2

=

2300

400×230

⇒400

So, turns in the secondary windings are 400.