Search
.Management Sciences
Category: Regulated D.C. Power Supply
The load voltage is approximately constant when a Zener diode is ________________?
0
A. Forward biased
B. Unbiased
C. Reverse biased
D. Operating in the breakdown region
An ideal regulated power supply is one which has voltage regulation of________________?
A. 0%
B. 5%
C. 10%
D. 1%
Zener diode are generally made of _____________?
A. Germanium
B. Silicon
C. Carbon
D. None of the above
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
When load current is zero, the Zener current will be_____________?
A. Zero
B. Minimum
C. Maximum
D. None of the above
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
If the load current drawn by unregulated power supply increases, the d.c. output voltage______________?
A. Increases
B. Decreases
C. Stays the same
D. None of the above
A Zener diode is used as a _____________voltage regulating device?
A. Shunt
B. Series
C. Series-shunt
D. None of the above
Which of these is the best description for a Zener diode ?
A. It is a diode
B. It is a constant current device
C. It is a constant-voltage device
D. It works in the forward region
Recent Comments