Dynamo is a machine, the work of which is :

Options

A. To convert electric energy into mechanical energy
B. To convert high voltage into low voltage
C. To convert low voltage into high voltage
D. To convert mechanical energy into electrical energy

Explanation

**Step-by-Step Solution:**

1. **Understanding the Function of a Dynamo:**
A dynamo is a type of electrical generator. Its primary function is to convert one form of energy into another.

2. **Identifying the Types of Energy Involved:**
- Mechanical Energy: This is the energy that is derived from the motion or position of an object.
- Electrical Energy: This is the energy that is carried by electric charges.

3. **Analyzing the Options Provided:**
- Option A: To convert electric energy into mechanical energy.
- Option B: To convert high voltage into low voltage.
- Option C: To convert low voltage into high voltage.
- Option D: To convert mechanical energy into electrical energy.

4. **Determining the Correct Option:**
The correct function of a dynamo is to convert mechanical energy into electrical energy. Therefore, the correct answer is:
**Option D: To convert mechanical energy into electrical energy.**

5. **Conclusion:**
A dynamo is an electrical generator that specifically converts mechanical energy into electrical energy, producing direct current.

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