66. The ________ the source resistance and/or ________ the load resistance, the less the overall gain of an amplifier.
(a) smaller, smaller
(b) smaller, larger
(c) larger, smaller
(d) larger, larger
67. In an unbypassed emitter bias configuration hie replaces ________ in the re model.
(a) re
(b)
(c) re
(d) Ib
68. Which of the following represent(s) the advantage(s) of the system approach over the r-model approach?
(a) Thevenin’s theorem can be used.
(b) The effect of changing the load can be determined by a simple equation.
(c) There is no need to go back to the ac equivalent model and analyze the entire network.
(d) All of the above
69. In an emitter-follower, the voltage gain is ________.
(a) slightly less than 1
(b) slightly more than 1
(c) a very large value
(d) None of the above
70. In a fixed-bias network, the input signal Vi is applied to the ________ of the transistor while the output Vo is off the ________.
(a) base, collector
(b) base, emitter
(c) emitter, collector
(d) None of the above
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