91. The ac voltage gain of a Darlington connection is about ________.
(a) 0
(b) 1
(c) D
(d) None of the above
92. In an emitter-follower, the output voltage is ________ with the input voltage.
(a) 45º out of phase
(b) 90º out of phase
(c) 180º out of phase
(d) in phase
93. A common-base configuration has ________ impedance at the input and ________ impedance at the output.
(a) high, high
(b) high, low
(c) low, low
(d) low, high
94. An emitter-follower has ________ impedance at the input and ________ impedance at the output.
(a) high, high
(b) low, high
(c) high, low
(d) low, low
95. ________ is slightly affected if the condition ro 10RE is not satisfied in the analysis of an emitter-follower configuration.
(a) Zi
(b) Zo
(c) Av
(d) Ai
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