41. The parasitic resistance value can be reduced by :
(a) Operating the transistor in saturation region
(b) Operating the transistor in cut-off region
(c) Changing the transistor structure
(d) Grounding the emitter terminal of the transistor
42. Which of the following is not a merit of transistors in place of vacuum tubes ?
(a) Transistors are compact
(b) Consume less power
(c) Faster and economical
(d) None of these
43. The most commonly used configuration of an n-p-n transistor as a switch is :
(a) Common collector
(b) Common emitter
(c) Common base
(d) Both common base and common collector
44. N-P-N transistors are preferred ones than P-N-P transistors for digital application because :
(a) Electron mobility is more compared to holes mobility
(b) They are cheaper
(c) They are costlier
(d) Easy availability in the market
45. A Schottky transistor used as a switch operates between :
(a) Cut-off and saturation regions
(b) Cut-off and active regions
(c) Active and saturation regions
(d) None of these
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