Special Diodes – 2 – 9

91. The varactor is usually :

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

ANSWER

EXPLANATION

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

EXPLANATION

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

EXPLANATION

94. Another name for zener diode is ………… diode.

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

ANSWER

EXPLANATION

95. Zener diodes are generally made of …………

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

ANSWER

EXPLANATION

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