33. 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 series resistance ?
(a)10 Ω (b)50 Ω (c)25 Ω (d)40 Ω
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Regulated Power Supplies » Exercise - 119. A 5 mA change in zener current produces a 50 mV change in zener voltage. What is the zener impedance ? (a) 1 Ω (b) 0.1 Ω (c) 100 Ω (d) 10 Ω
Regulated Power Supplies » Exercise - 131. Two similar 15 V zeners are connected in series. What is the regulated output voltage ? (a) 15 V (b) 7.5 V (c) 30 V (d) 45 V
Regulated Power Supplies » Exercise - 118. The current in a zener diode is limited by ............ (a) external resistance (b) power dissipation (c) both a and b (d) none of the above
Regulated Power Supplies » Exercise - 14. A power supply which has a voltage regulation of ........... is unregulated power supply. (a) 0 % (b) 0.5 % (c) 10 % (d) 0.8 %
Regulated Power Supplies » Exercise - 15. Commercial power supplies have voltage regulation ........... (a) of 10 % (b) of 15 % (c) of 25 % (d) within 1 %