Function of rectifier is

Options

A. To convert ac into dc
B. To convert dc into ac
C. Both (1) and (2)
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding the Function of a Rectifier**:
- A rectifier is an electronic device that converts alternating current (AC) to direct current (DC). This is a fundamental function in many electronic circuits where DC is required for operation.

2. **Analyzing the Input and Output Waveforms**:
- The input waveform of a rectifier is typically an AC signal, which alternates between positive and negative values.
- The output waveform after rectification is a DC signal, which flows in one direction only, indicating that the negative portion of the AC waveform has been removed or inverted.

3. **Identifying the Correct Option**:
- Given the options:
1. To convert AC into DC
2. To convert DC into AC
3. Both first and second options
4. None of these
- Since the primary function of a rectifier is to convert AC into DC, the correct option is option 1.

4. **Conclusion**:
- Therefore, the function of a rectifier is to convert alternating current (AC) into direct current (DC).