Purpose of oscillator in the AM transmitter

Options

A. to produce modulating signal
B. to produce carrier wave
C. to produce enough power
D. to reduce the noise

Answer

### Step-by-Step Solution:

1. **Understanding the Role of an Oscillator**:
- An oscillator is an electronic circuit that generates a repetitive signal, typically in the form of a sine wave or square wave. In the context of communication systems, it is crucial for generating the necessary signals for transmission.

2. **Identifying the Function in AM Transmission**:
- In Amplitude Modulation (AM) transmission, the information signal (audio, video, etc.) needs to be superimposed on a carrier wave. The carrier wave is a high-frequency signal that can travel long distances.

3. **Carrier Wave Generation**:
- The oscillator in an AM transmitter is responsible for generating this carrier wave. It creates a stable frequency that can be modulated with the information signal.

4. **Modulation Process**:
- Once the carrier wave is generated by the oscillator, it is then modulated with the audio or information signal. This modulation alters the amplitude of the carrier wave in accordance with the information being sent.

5. **Conclusion**:
- Therefore, the primary purpose of the oscillator in an AM transmitter is to produce the carrier wave that is essential for the transmission of information over radio frequencies.

### Final Answer:
The purpose of the oscillator in the AM transmitter is to produce the carrier wave.

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