Commercial power supplies have voltage regulation ______________?

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

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

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

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

4. A Zener diode utilises_____________characteristic for voltage regulation?

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

5. 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...

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 Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes______________?

   A. Less than load current B. Zero C. More than load current D. None of the above...

9. 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...

10. 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...