26. The barrier potential of Schottky diode is :
(a) 0.25 V
(b) 0.35 V
(c) 0.45 V
(d) 0.56 V
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
28. Which among the following diodes has zero breakdown voltage ?
(a) Zener diode
(b) Schottky diode
(c) Backward diode
(d) Tunnel diode
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
30. A Schottky diode has :
(a) Insulator – Semiconductor junction
(b) Semiconductor – Semiconductor junction
(c) Metal – Semiconductor junction
(d) Metal – Metal junction
Related Posts
555555555552. Calculate static resistance RD of a diode having ID = 30 mA and VD = 0.75 V. (a) 25 (b) 40 (c) 0.04 (d) 0.025- 5555555555110. The forward voltage across a conducting silicon diode is about (a) 0.3 V. (b) 1.7 V. (c) –0.7 V. (d) 0.7 V.
- 555555555563. How many terminals does a diode have? (a) 1 (b) 2 (c) 3 (d) 4
- 555555555511. How many terminals does a Shockley diode have? (a) 5 (b) 4 (c) 3 (d) 2
- 555555555549. The forward characteristics curve of a diode grows in ________ form. (a) linear (b) exponential (c) logarithmic (d) sinusoidal