Special Diodes – 2 – 7

81. If the PIV rating of a diode is exceeded, ……..

(a) the diode conducts poorly
(b) the diode is destroyed
(c) the diode behaves as zener diode
(d) none of the above

ANSWER
Answer : (b)

EXPLANATION
No answer description available for this question. Let us discuss.

82. Zener diodes are used primarily as :

(a) amplifiers
(b) voltage regulators
(c) rectifiers
(d) oscillators

ANSWER
Answer : (b)

EXPLANATION
No answer description available for this question. Let us discuss.

83. A pn junction that radiates energy as light instead of as heat is called a :

(a) LED
(b) photo-diode
(c) photocell
(d) Zener diode

ANSWER
Answer : (a)

EXPLANATION
No answer description available for this question. Let us discuss.

84. The capacitance of a varactor diode increases when reverse voltage across it :

(a) decreases
(b) increases
(c) breaks down
(d) stores charge

ANSWER
Answer : (a)

EXPLANATION
No answer description available for this question. Let us discuss.

85. The device associated with voltage-controlled capacitance is a :

(a) LED
(b) photo-diode
(c) varactor diode
(d) Zener diode

ANSWER
Answer : (c)

EXPLANATION
No answer description available for this question. Let us discuss.

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