Characteristic Curves of a Zener Diode and Finding Reverse Break Down Voltage NEET Questions

Physics - Experimental Skills

Characteristic Curves of a Zener Diode and Finding Reverse Break Down Voltage MCQ Questions


1.
A Zener diode is:
A.
A two-junction transistor
B.
A regular diode used in forward bias only
C.
An ohmic resistor
D.
A specially designed p-n junction diode that operates in the reverse breakdown region
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ANSWER :
D. A specially designed p-n junction diode that operates in the reverse breakdown region
2.
Who is the Zener diode named after?
A.
Niels Bohr
B.
Heinrich Hertz
C.
Clarence Melvin Zener (American physicist who discovered the Zener effect)
D.
Michael Faraday
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ANSWER :
C. Clarence Melvin Zener (American physicist who discovered the Zener effect)
3.
The key feature that distinguishes a Zener diode from an ordinary diode is:
A.
It only works in forward bias
B.
It generates light
C.
It has three terminals
D.
It is designed to operate safely in the reverse breakdown region without permanent damage
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ANSWER :
D. It is designed to operate safely in the reverse breakdown region without permanent damage
4.
The most important parameter of a Zener diode is:
A.
Its forward voltage drop
B.
Its physical size
C.
Its Zener (breakdown) voltage V_Z (typically specified at a particular test current)
D.
Its color
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ANSWER :
C. Its Zener (breakdown) voltage V_Z (typically specified at a particular test current)
5.
In reverse bias below the Zener voltage, the Zener diode behaves like:
A.
A short circuit
B.
A normal forward-biased diode
C.
A capacitor
D.
An ordinary reverse-biased diode (very small saturation current, nearly insulator)
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ANSWER :
D. An ordinary reverse-biased diode (very small saturation current, nearly insulator)
6.
In reverse bias at and beyond V_Z, the Zener diode:
A.
Stops conducting
B.
Forward biases itself
C.
Burns up
D.
Conducts substantially in reverse direction; voltage stays nearly constant at V_Z
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ANSWER :
D. Conducts substantially in reverse direction; voltage stays nearly constant at V_Z