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Special Diodes – 1 – 6

26. The barrier potential of Schottky diode is :

(a) 0.25 V
(b) 0.35 V
(c) 0.45 V
(d) 0.56 V

Answer
Answer : (a)

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

27. Across a varactor diode, an increase in its reverse bias potential causes :

(a) Width of depletion layer to increase thus increasing the capacitance
(b) Width of depletion layer to decrease thus increasing the capacitance
(c) Width of depletion layer to increase thus decreasing the capacitance
(d) Width of depletion layer to decrease thus decreasing the capacitance

Answer
Answer : (c)

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

28. Which among the following diodes has zero breakdown voltage ?

(a) Zener diode
(b) Schottky diode
(c) Backward diode
(d) Tunnel diode

Answer
Answer : (d)

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

29. A Zener diode may be thought as open for :

(a) 0V < V < VZ
(b) 0V > V > VZ
(c) 0V > V < VZ
(d) 0V < V > VZ

Answer
Answer : (a)

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

30. A Schottky diode has :

(a) Insulator – Semiconductor junction
(b) Semiconductor – Semiconductor junction
(c) Metal – Semiconductor junction
(d) Metal – Metal junction

Answer
Answer : (c)

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

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