Special Diodes – Exercise – 3

106. Zener diodes with breakdown voltages less than 5 V operate predominantly in what type of breakdown?

(a) avalanche
(b) zener
(c) varactor
(d) Schottky

Answer
Answer : (b)
Explanation
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107. You have an application for a diode to be used in a tuning circuit. A type of diode to use might be

(a) an LED.
(b) a Schottky diode.
(c) a Gunn diode.
(d) a varactor.

Answer
Answer : (d)
Explanation
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108. A tunnel diode is used

(a) in high-power circuits.
(b) in circuits requiring negative resistance.
(c) in very fast-switching circuits.
(d) in power supply rectifiers.

Answer
Answer : (b)
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109. An LED is forward-biased. The diode should be on, but no light is showing. A possible trouble might be

(a) the diode is open.
(b) the series resistor is too small.
(c) none. The diode should be off if forward-biased.
(d) the power supply voltage is too high.

Answer
Answer : (a)
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110. Nota

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