Question

A Step-Up Transformer Increases
A) Power
B) Current
C) Frequency
D) Voltage

Answer 1

(D) voltage

A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer.

Answer 2

A Step-Up Transformer Increases D) Voltage

A step-up transformer is a transformer in which the secondary side has more turns than the primary transformer. hence the flux linkage in secondary side winding is more and consequently the induced voltage is more than the primary side.

The relation between voltage and turns ratio is given by,

V₂/V₁ = N₂/N₁ > 1

=> V₂ > V₁

Hence A Step-Up Transformer Increases D) Voltage