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ECE Objective Questions { Bipolar Junction Transistor }



71. The base of a transistor is ____ doped
A. heavily
B. moderately
C. lightly
D. none of the above

72. The element that has the biggest size in a transistor is
A. collector
B. base
C. emitter
D. collector-base junction

73. In a pnp transistor, the current carriers are
A. acceptor ions
B. donor ions
C. free electrons
D. holes

74. The collector of a transistor is doped.
A. heavily
B. moderately
C. lightly
D. none of the above

75. A transistor is a operated device
A. current
B. voltage
C. both voltage and current
D. none of the above

76. In an npn transistor, are the minority carriers.
A. free electrons
B. holes
C. donor ions
D. acceptor ions

77. The emitter of a transistor is doped.
A. lightly
B. heavily
C. moderately
D. none of the above

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