The transformation ratio in the step-down transformer is

The transformation ratio in the step -up transformer is

The transformation ratio in the step -up transformer is

The transformation ratio in the step-up transformer is

The transformer ratio of the step down transformer is 2 : 5 . Alternating voltage of 180 V amplitude is supplied to the primary. Calculate the r.m.s. value of secondary voltage

What is a step down transformer?

What is increase in step-down transformer?