Transistors – 2 – 4

66. In a transistor, the base current is about …….. of emitter current.

(a) 25%
(b) 20%
(c) 35%
(d) 5%

ANSWER

EXPLANATION

67. At the base-emitter junction of a transistor, one finds ……..

(a) reverse bias
(b) a wide depletion layer
(c) low resistance
(d) none of the above

ANSWER

EXPLANATION

68. The input impedance of a transistor is ……

(a) high
(b) low
(c) very high
(d) almost zero

ANSWER

EXPLANATION

69. Most of the majority carriers from the emitter ………

(a) recombine in the base
(b) recombine in the emitter
(c) pass through the base region to the collector
(d) none of the above

ANSWER

EXPLANATION

70. The current IB is ……..

(a) electron current
(b) hole current
(c) donor ion current
(d) acceptor ion current

ANSWER

EXPLANATION

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