Special Diodes – Exercise – 2

91. The varactor is usually :

(a) forward-biased
(b) reverse-biased
(c) unbiased
(d) in the breakdown region

Answer
Answer : (b)
Explanation
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92. A zener diode that has very narrow depletion layer will breakdown by ………… mechanism.

(a) avalanche
(b) zener
(c) both avalanche and zener
(d) none of the above

Answer
Answer : (b)
Explanation
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93. As the junction temperature increases, the voltage breakdown point for avalanche mechanism …………

(a) remains the same
(b) decreases
(c) increases
(d) none of the above

Answer
Answer : (c)
Explanation
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94. Another name for zener diode is ………… diode.

(a) breakdown
(b) voltage
(c) power
(d) current

Answer
Answer : (a)
Explanation
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95. Zener diodes are generally made of …………

(a) germanium
(b) silicon
(c) carbon
(d) none of the above

Answer
Answer : (b)
Explanation
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