Related Mcqs:

1. A power supply has a voltage regulation of 1%. If the no-load voltage is 20 V, what is the full-load voltage ?

   A. 8 V
   B. 7 V
   C. 6 V
   D. 2 V

2. A certain regulator has a no-load voltage of 6 V and a full-load output of 5.82 V. What is the load regulation ?

   A. 09%
   B. 87 %
   C. 72 %
   D. None of the above

3. In an unregulated power supply, if load current increases, the output voltage _____________?

   A. Remains the same
   B. Decreases
   C. Increases
   D. None of the above

4. If the load current drawn by unregulated power supply increases, the d.c. output voltage _____________?

   A. Increases
   B. Decreases
   C. Stays the same
   D. None of the above

5. In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance ?

   A. 10 O
   B. 50 O
   C. 25 O
   D. 40 O

6. In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?

   A. Increases
   B. Decreases
   C. Remains the same
   D. None of the above

7. If the input a.c. voltage to regulated or ordinary power supply increases by 5% what will be the approximate change in d.c. output voltage?

   A. 10%
   B. 20%
   C. 15%
   D. 5%

8. A power supply which has voltage regulation of ____________ is unregulated power supply?

   A. 0 %
   B. 5 %
   C. 10 %
   D. 8%

9. If the load current drawn by unregulated power supply increases, the d.c. output voltage______________?

   A. Increases
   B. Decreases
   C. Stays the same
   D. None of the above

10. An ideal regulated power supply is one which has voltage regulation of________________?

    A. 0%
    B. 5%
    C. 10%
    D. 1%