AP EAMCET · PHYSICS · Communication System
If the maximum and minimum voltages of an A.M wave are \(\mathrm{V}_{\max }\) and \(\mathrm{V}_{\text {min }}\) respectively, Then the modulation factor ' \(m\) ' is
- A \(\frac{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}{\left(\mathrm{V}_{\max } \cdot \mathrm{V}_{\min }\right)}\)
- B \(\frac{\left(\mathrm{V}_{\max }-\mathrm{V}_{\text {min }}\right)}{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}\)
- C \(\frac{2 \mathrm{~V}_{\max } \mathrm{V}_{\min }}{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}\)
- D \(\frac{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}{\left(\mathrm{V}_{\max }-\mathrm{V}_{\min }\right)}\)
Answer & Solution
Correct Answer
(B) \(\frac{\left(\mathrm{V}_{\max }-\mathrm{V}_{\text {min }}\right)}{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}\)
Step-by-step Solution
Detailed explanation
Modulation factor of AM system is given by \(\mu=\frac{V_{\max }-V_{\min }}{V_{\max }+V_{\min }}\)
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