Exercise: Operational Amplifiers

Questions for: Operational Amplifiers

mcq18_1012.gif

What value of input resistance is needed in the given circuit to produce the given output voltage?

A:
50 omega.gif
B:
4 komega.gif
C:
4.08 komega.gif
D:
5 komega.gif
Answer: B
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When a capacitor is used in place of a resistor in an op-amp network, its placement determines:
A:
open- or closed-loop gain
B:
integration or differentiation
C:
saturation or cutoff
D:
addition or subtraction
Answer: B
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The Schmitt trigger is a two-state device that is used for:
A:
pulse shaping
B:
peak detection
C:
input noise rejection
D:
filtering
Answer: A
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If the feedback/input resistor ratio of a feedback amplifier is 4.6 with 1.7 V applied to the noninverting input, what is the output voltage value?
A:
7.82 V
B:
saturation
C:
cutoff
D:
9.52 V
Answer: D
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If an op-amp has one input grounded and the other input has a signal feed to it, then it is operating as what?
A:
Common-mode
B:
Single-ended
C:
Double-ended
D:
Noninverting mode
Answer: B
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