11. Two similar 15 V Zeners are connected in series. What is the regulated output voltage? A. 15 V B. 5 V C. 30 V D. 45 V Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
12. An ideal regulated power supply is one which has voltage regulation of ___________ A. 0% B. 5% C. 10% D. 1% Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
13. 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% Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
14. The load voltage is approximately constant when a Zener diode is ___________ A. Forward biased B. Unbiased C. Reverse biased D. Operating in the breakdown region Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
15. 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
16. 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 Ω B. 50 Ω C. 25 Ω D. 40 Ω Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
17. As the junction temperature increases, the voltage breakdown point for Zener mechanism ___________ A. Is increased B. Is decreased C. Remains the same D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
18. As the junction temperature increases, the voltage breakdown point for avalanche mechanism ___________ A. Remains the same B. Decrease C. Increases D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
19. For increasing the voltage rating, zeners are connected in ___________ A. Parallel B. Series-parallel C. Series D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
20. When load current is zero, the Zener current will be A. Zero B. Minimum C. Maximum D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
