Electrical Engineering - Transformers
Exercise : Transformers - True or False
- Transformers - General Questions
- Transformers - True or False
1.
If the voltage is stepped up, the current is stepped down, and vice versa.
2.
A step-down transformer has a turns ratio less than 1.
Answer: Option
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.
4.
The primary is the winding connected to the source, and the secondary is the winding connected to the load.
5.
A transformer consists of two or more cores that are electrically coupled on a common core.
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