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

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. 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

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

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

6. 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

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 can deliver a maximum rated current of 0.5 A at full-load output voltage of 20 V. What is the minimum load resistance that you can connect across the supply?

   A. 10 O
   B. 20 O
   C. 15 O
   D. 40 O

9. Commercial power supplies have voltage regulation ______________?

   A. of 10%
   B. of 15%
   C. of 25%
   D. within 1%

10. A Zener diode utilises_____________characteristic for voltage regulation?

    A. Forward
    B. Reverse
    C. Both forward and reverse
    D. None of the above