76. In a common-emitter configuration ________ is the controlling current while ________ is the controlled current.
(a) IC, IB
(b) IC, IE
(c) IB, IC
(d) None of the above
77. For a common-base configuration, the input impedance is relatively ________ and the output impedance quite ________.
(a) high, small
(b) small, high
(c) small, small
(d) high, high
78. The ________ model(s) is (are) commonly used in the small-signal ac analysis of transistor networks.
(a) re
(b) hybrid equivalent
(c) re and hybrid equivalent
(d) None of the above
79. For transistor amplifiers, the no-load voltage gain is ________ the loaded voltage gain.
(a) smaller than
(b) greater than
(c) the same as
(d) None of the above
80. The input and output signals are ________ for the typical transistor amplifier at frequencies that permit ignoring the effects of the reactive elements.
(a) in phase
(b) 180º out of phase
(c) either in phase or 180º out of phase
(d) None of the above
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