Exercise: Operational Amplifiers

Questions for: Operational Amplifiers

If a noninverting amplifier has an RIN of 1000 ohms and an RFB of 2.5 kilohms, what is the RIN voltage when 1.42 mV is applied to the correct input?
A:
3.5 mV
B:
ground
C:
1.42 mV
D:
0.56 mV
Answer: C
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How many leads does the TO-5 metal can package of an operational amplifier have?
A:
8, 10, or 12
B:
6, 8, or 10
C:
8 or 14
D:
8 or 16
Answer: A
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A portion of the output that provides circuit stabilization is considered to be:
A:
negative feedback
B:
distortion
C:
open-loop
D:
positive feedback
Answer: A
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What starts a free-running multivibrator?
A:
a trigger
B:
an input signal
C:
an external circuit
D:
nothing
Answer: D
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With negative feedback, the returning signal:
A:
aids the input signal
B:
is proportional to output current
C:
opposes the input signal
D:
is proportional to differential voltage gain
Answer: C
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