197. An ideal op-amp is an ideal
A. voltage controlled current source
B. voltage controlled voltage source
C. current controlled current source
D. current controlled voltage source

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198. Voltage series feedback (also called series-shunt feedback) results in
A. increase in both input and output impedances
B. decrease in both input and output impedances
C. increase in input impedance and decrease in output impedance
D. decrease in input impedance and increase in output impedance

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199. The minimum number of 2-to-1 multiplexers required to realize a 4-to-1 multiplexer is
A.1
B.2
C.3
D.4

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200. The effect of current shunt feedback in an amplifier is to
A. increase the input resistance and decrease the output resistance.
B. increase both input and output resistances.
C. decrease both input and output resistances.
D. decrease the input resistance and increase the output resistance.

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