Modulation factor determines-

Options

A. only the strength of the transmitted signal
B. only the quality of the transmitted signal
C. both the strength and quality of the signal
D. none of these

Answer

To solve the question regarding what the modulation factor determines, we can follow these steps:

### Step 1: Understand the Modulation Factor
The modulation factor, denoted by \( \mu \), is a key concept in communication systems. It is defined as the ratio of the amplitude of the modulating signal (message signal) to the amplitude of the carrier signal.

### Step 2: Write the Formula
The formula for the modulation factor is given by:
\[ \mu = \frac{A_m}{A_c} \]
where:
- \( A_m \) is the amplitude of the modulating signal (message signal).
- \( A_c \) is the amplitude of the carrier signal.

### Step 3: Analyze the Implications of the Modulation Factor
The modulation factor indicates how much the carrier signal is being varied by the modulating signal. A higher modulation factor means that the modulating signal has a greater influence on the carrier signal.

### Step 4: Determine What the Modulation Factor Affects
The modulation factor affects both the strength and quality of the transmitted signal. A well-modulated signal ensures that the information is transmitted effectively, maintaining clarity and reducing distortion.

### Step 5: Choose the Correct Option
Based on the analysis, we can conclude that the modulation factor determines both the strength and quality of the signal. Therefore, the correct option is:
**Option C: Both the strength and quality of the signal.**

### Summary of the Solution
The modulation factor \( \mu \) is defined as \( \frac{A_m}{A_c} \) and it determines both the strength and quality of the signal.

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