Question

A transformer is to be used to provide power for a computer drive. The number of turns in the primary is 1000, and it delivers a secondary current of 600 milliamperes (mA) at a secondary voltage of 8.0 V for the drive. A voltage of 400 volts is applied across the primary. What kind of transformer is this?a. step upb. Loadc. Step-Downd. AC

Answer 1

Answer:

C.Step-Down

Explanation:

Given that

Number of turn in the primary N₁= 1000

Secondary current I₂= 600 mA

Secondary voltage V₂= 8 V

Primary voltage V₁= 400 V

From the above information we can say that output voltage is low compare to input voltage.

V₂ < V₁

We know that if

1 . V₂ < V₁  - Then transformer will be step down .

2. V₂ > V₁  - Then transfer will be step up .

Here

V₂ < V₁  ( 8 V < 400 V)

So the transformer is step down transformer.

C.Step-Down