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: Option B
Related Questions on Regulated DC Power Supply
A. Less than load current
B. Zero
C. More than load current
D. None of the above
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
A Zener regulator ___________ in the power supply
A. Increases the ripple
B. Decreases the ripple
C. Neither increases nor decreases the ripple
D. Data insufficient
Zener diode are generally made of ___________
A. Germanium
B. Silicon
C. Carbon
D. None of the above
Join The Discussion