96. A form of class A amplifier having maximum efficiency of ________ uses a transformer to couple the output signal to the load.
(a) 90%
(b) 78.5%
(c) 50%
(d) 25%
97. The beta of a power transistor is generally ________.
(a) more than 200
(b) 100 to 200
(c) less than 100
(d) 0
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