Multiple choice

A regulated power supply as shown in the figure below has an unregulated input (UR) of 15 V and generates a regulated output, i.e. Vout. If the unregulated voltage increases by 20%, the power dissipation across the transistor Q1 ( Note: The ground has been shown by the symbol $\nabla$.)

  1. increases by 20%

  2. increases by 50%

  3. remains unchanged

  4. decreases by 20%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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