Electrical Engineering - Transformers

Exercise :: Transformers - True or False

1. 

If the voltage is stepped up, the current is stepped down, and vice versa.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

2. 

A step-down transformer has a turns ratio less than 1.

A. True
B. False

Answer: Option A

Explanation:

Ns/Np is known as the turns ratio.

In step down transformer the number of turns in secondary winding (Ns) will be less than the number of turns in primary (Np).

Therefore, the ratio will be less than 1 for step down transformer.

Ex: Np = 10, Ns = 5; Turns ratio = 5/10 = 0.5.


3. 

A transformer responds only to dc.

A. True
B. False

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4. 

The primary is the winding connected to the source, and the secondary is the winding connected to the load.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

5. 

A transformer consists of two or more cores that are electrically coupled on a common core.

A. True
B. False

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.