Question

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TRANSFORMERS
A transformer consists of two insulated coils of wire linked with a ring of
iron. The coils are called high-voltage and low-voltage windings, or primary and secondary windings. The primary winding is connected to the source of energy, and the secondary is connected to the load. The high-voltage winding is designed for the higher voltage, and has the greater number of turns. The ring of iron is called the core.
Each coil consists of a number of loops of round or rectangular wire.
Several strands may be used in parallel but electrically insulated from each other, from the core and from the other coil.
The core consists of thin sheets of high-grade silicon steel. The thickness
depends somewhat on the frequency at which the transformer is to operate. The thickness commonly used for 60 cycles is approximately 0.014 in.
The primary function of a transformer is to transform electrical energy from one alternating voltage to another. To transform large amounts of energy with maximum efficiency, many factors must be considered in determining the materials, design, and arrangement of the primary and secondary coils and the core.
3. Find the wrong statements and correct them:
1. A transformer consists of two insulated coils of winding.
2. The primary winding is connected to the source of energy.
3. The coils are called cores.
4. The winding is called the core
5. Several strands are used in series.
6. Each coil consists of a number of turns.
7. The core consists of thin sheets.
8. The secondary function of a transformer is to transform electrical energy
from a direct voltage to another.​

Answer 1

Відповідь:

3. Find the wrong statements and correct them:

1. A transformer consists of two insulated coils of winding. [Corrected]

2. The primary winding is connected to the source of energy. [Correct]

3. The coils are called cores. [Wrong: The coils are not called cores.]

  Corrected: The coils are called high-voltage and low-voltage windings or primary and secondary windings.

4. The winding is called the core. [Wrong: The winding is not called the core.]

  Corrected: The ring of iron is called the core.

5. Several strands are used in series. [Wrong: Several strands are not used in series.]

  Corrected: Several strands may be used in parallel but electrically insulated from each other, from the core, and from the other coil.

6. Each coil consists of a number of turns. [Correct]

7. The core consists of thin sheets. [Correct]

8. The secondary function of a transformer is to transform electrical energy from a direct voltage to another. [Wrong: The secondary function of a transformer is not to transform electrical energy from a direct voltage to another.]

  Corrected: The secondary function of a transformer is to transform electrical energy from one alternating voltage to another.