A Zener regulator _____________ in the power supply?

Related Mcqs:

1. 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

2. If the load resistance decreases in a Zener regulator, then Zener current ______________?

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

3. In a loaded Zener regulator, which is the largest Zener current ?

   A. Series current
   B. Zener current
   C. Load current
   D. None of the above

4. A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ?

   A. 1 O
   B. 1 O
   C. 100 O
   D. 10 O

5. In a Zener voltage regulator, the changes in load current produce changes in _________________?

   A. Zener current
   B. Zener voltage
   C. Zener voltage as well as Zener current
   D. None of the above

6. A Zener voltage regulator is used for ____________ load currents?

   A. High
   B. Very high
   C. Moderate
   D. Small

7. A 30 V Zener will have depletion layer width_______________ that of 10 V Zener?

   A. More than
   B. Less than
   C. Equal to
   D. None of the above

8. 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

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

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

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