Electronic Devices Circuits Zener Dioide Online Exam Quiz
Electronic Devices Circuits Zener Dioide GK Quiz. Question and Answers related to Electronic Devices Circuits Zener Dioide. MCQ (Multiple Choice Questions with answers about Electronic Devices Circuits Zener Dioide
Partial specifications of a Zener diode is provided. VZ = 10.0 V, VZK = 9.6 V, and IZT = 50 mA. Assuming that the power rating of a breakdown diode is established at about twice the specified Zener current (IZT), what is the power rating of each of the diodes described above?
Options
A : 1.04 W
B : 0.104 W
C : 10.4 mW
D : 1.04 mW
A designer requires a shunt regulator of approximately 20 V. Two kinds of Zener diodes are available: 6.8-V devices with rz of 10 ? and 5.1-V devices with rz of 30 ?. For the two major choices possible, find the load regulation. In this calculation neglect the effect of the regulator resistance R.
Options
A : -30mV/mA and 120mV/mA respectively
B : 30mV/mA and 60mV/mA respectively
C : -60mV/mA and +60mV/mA respectively
D : -30mV/mA and -120mV/mA respectively
A shunt regulator utilizing a zener diode with an incremental resistance of 5 ? is fed through an 82-? resistor. If the raw supply changes by 1.0 V, what is the corresponding change in the regulated output voltage?
Options
A : 72.7 mV
B : 73.7 mV
C : 74.7 mV
D : 75.7 mV
A 9.1-V zener diode exhibits its nominal voltage at a test current of 28 mA. At this current the incremental resistance is specified as 5 ?. Find VZ0 of the Zener model.
Options
A : 8.96V
B : 9.03V
C : 9.17V
D : 9.24V
In Zener diode, for currents greater than the knee current, the v-i curve is almost
Options
A : Almost a straight line parallel to y-axis
B : Almost a straight line parallel to x-axis
C : Equally inclined to both the axes with a positive slope
D : Equally inclined to both the axes with a negative slope
Which of the following can be used in series with a Zener diode so that combination has almost zero temperature coefficient?
Options
A : Diode
B : Resistor
C : Transistor
D : MOSFET
Which of the following is true about the temperature coefficient or TC of the Zener diode?
Options
A : For Zener voltage less than 5V, TC is negative
B : For Zener voltage around 5V, TC can be made zero
C : For higher values of Zener voltage, TC is positive
D : All of the mentioned
Which of the following is true about the resistance of a Zener diode?
Options
A : It has an incremental resistance
B : It has dynamic resistance
C : The value of the resistance is the inverse of the slope of the i-v characteristics of the Zener diode
D : All of the mentioned
Zener diodes can be effectively used in voltage regulator. However, they are these days being replaced by more efficient
Options
A : Operational Amplifier
B : MOSFET
C : Integrated Circuits
D : None of the mentioned
Zener diodes are also known as
Options
A : Voltage regulators
B : Forward bias diode
C : Breakdown diode
D : None of the mentioned
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