71. In a hybrid equivalent circuit, ________ is determined to make it easier to find the other parameters.
(a) Zi
(b) Zo
(c) Ai
(d) Av
72. The feedback pair uses a(n) ________ transistor driving a(n) ________ transistor, the two devices acting effectively much like one pnp transistor.
(a) pnp, npn
(b) pnp, pnp
(c) npn, npn
(d) None of the above
73. In an unbypassed emitter-bias configuration ________ replaces re in the hybrid equivalent circuit.
(a) hie
(b) hfe
(c) hre
(d) hoe
74. The output voltage and the input voltage are ________ for the common-base configuration.
(a) 45º out of phase
(b) 90º out of phase
(c) 180º out of phase
(d) in phase
75. One junction of an operating transistor is ________ and the other one is ________.
(a) forward-biased, forward-biased
(b) forward-biased, reverse-biased
(c) reverse-biased, reverse-biased
(d) None of the above
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