For a single side band transmission a balanced modulator is used to

Options

A. increase power of carrier wave
B. increase amplitude of carrier wave
C. suppress audio signal
D. suppress carrier component

Explanation

To solve the question "For a single side band transmission a balanced modulator is used to," we need to analyze the purpose of a balanced modulator in the context of single sideband (SSB) transmission.

### Step-by-Step Solution:

1. **Understanding Single Sideband Transmission**:
- Single sideband (SSB) transmission is a refinement of amplitude modulation (AM) that uses bandwidth more efficiently. In SSB, only one of the sidebands (either upper or lower) is transmitted, while the carrier wave is suppressed.

2. **Role of the Balanced Modulator**:
- A balanced modulator is a device that takes an audio signal and a carrier wave and produces an output that contains only the sidebands of the carrier wave. This means it suppresses the carrier component entirely.

3. **Why Suppress the Carrier Component?**:
- Suppressing the carrier is essential in SSB transmission because it reduces the power required for transmission. The carrier wave does not carry any information and only consumes power.

4. **Conclusion**:
- Therefore, the balanced modulator is used in single sideband transmission primarily to **suppress the carrier component**. This allows for more efficient use of power and bandwidth, making the transmission more effective.

### Final Answer:
For a single sideband transmission, a balanced modulator is used to **suppress the carrier component**.

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