If the maximum and minimum voltages of an A.M wave are $\mathrm{V}_{\max }$ and $\mathrm{V}_{\text {min }}$…

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
  1. $\frac{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}{\left(\mathrm{V}_{\max } \cdot \mathrm{V}_{\min }\right)}$
  2. $\frac{\left(\mathrm{V}_{\max }-\mathrm{V}_{\text {min }}\right)}{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}$
  3. $\frac{2 \mathrm{~V}_{\max } \mathrm{V}_{\min }}{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}$
  4. $\frac{\left(\mathrm{V}_{\max }+\mathrm{V}_{\min }\right)}{\left(\mathrm{V}_{\max }-\mathrm{V}_{\min }\right)}$

Solution

Modulation factor of AM system is given by $\mu=\frac{V_{\max }-V_{\min }}{V_{\max }+V_{\min }}$

Asked in: AP EAMCET 2024 (18 May Shift 1)

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