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electronic devices operational amplifiers
1. A voltage-follower amplifier comes to you for service. You find the voltage gain to be 5.5 and the input impedance 22 k. The probable fault in this amplifier, if any, is
(A): none of these.
(B): nothing is wrong. The trouble must be somewhere else.
(C): the gain is too low for this type of amplifier.
(D): the input impedance is too high for this amplifier.
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