Question:
A full-wave rectifier provides a DC output voltage of \(20\ \text{V}\). If the root mean square (RMS) value of the unwanted AC component is measured as \(2\ \text{V}\), the ripple factor in percentage is
A full-wave rectifier provides a DC output voltage of \(20\ \text{V}\). If the root mean square (RMS) value of the unwanted AC component is measured as \(2\ \text{V}\), the ripple factor in percentage is
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Ripple factor is the ratio of the rms value of the AC component to the DC output.
Updated On: Nov 12, 2026
- \(2\%\)
- \(5\%\)
- \(10\%\)
- \(20\%\)
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
The ripple factor is \(r = \dfrac{V_{ac,\,rms}}{V_{dc}}\). It measures how much AC remains in the rectified output.
Step 2: Calculation
\(r = \dfrac{2\ \text{V}}{20\ \text{V}} = 0.1\).
Step 3: Percentage
Ripple factor in percent \(= 0.1\times 100 = 10\%\).
Final Answer:
The ripple factor is 10 percent. \[ \boxed{\text{(C) }10\%} \]
The ripple factor is \(r = \dfrac{V_{ac,\,rms}}{V_{dc}}\). It measures how much AC remains in the rectified output.
Step 2: Calculation
\(r = \dfrac{2\ \text{V}}{20\ \text{V}} = 0.1\).
Step 3: Percentage
Ripple factor in percent \(= 0.1\times 100 = 10\%\).
Final Answer:
The ripple factor is 10 percent. \[ \boxed{\text{(C) }10\%} \]
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