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WorksheetsZener diode
Total questions: 10
Worksheet time: 9mins
Zener diode is operated in which of the following bias condition
forward bias
reverse bias
open circuited
unbiased
In the breakdown region, a zener diode behaves like a …………… source.
constant voltage
constant current
constant resistance
variable current
Which of the following is application of zener diode ?
Ampllification
Voltage regulation
Filter
Rectifier
Avalanche breakdown mainly occurs due to a factor called....
applied E-field
collisions of charge carriers
thermal energy
equilibrium conditions
In __________________ region, zener act as _________________.
forward bias, voltage regulator
forward bias, normal diode
reverse break down, normal diode
reverse break down, current regulator
In the circuit, what is the output voltage across 10kΩ?
a) 80 V
b) 50 V
c) 120 V
d) 170 V
If the load resistor (RL) decreases, IS will ______ and IZ will ______.
remain the same, increase
decrease, remain the same
increase, remain the same
remain the same, decrease
If VS increases, what will happen to IS?
increase.
decrease.
remain the same.
zero
If we attempt to increase the input voltage (VS), what happens to the Zener current (IZ)?
zero
decreases
remains the same
increases
A Zener diode, having breakdown voltage (Vz) equal to 15 V, is used in a voltage regulator circuit shown in the figure. The current through the diode is
10 mA
15 mA
20 mA
5 mA
65 mA
