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GATE ECE 2006 | Question-77

statement for Linked Answer Questions 76 and 77
A regulated power supply, shown in figure below, has an unregulated input (UR) of $15$ Volts and generates a regulated output $V_{\text {out }}$. Use the component values shown in the figure.


In the figure above, the ground has been shown by the symbol $\nabla$

If the unregulated voltage increases by $20 \%$, then power dissipation across the transistor $\text{Q1}$

  1. increases by $20 \%$
  2. increases by $50 \%$
  3. remains unchanged
  4. decreases by $20 \%$
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