Exercise: Operational Amplifiers

Questions for: Operational Amplifiers

The voltage required to force the differential output to zero is called _______.
A:
input-offset current
B:
input-offset voltage
C:
input bias current
D:
slew rate voltage
Answer: B
No answer description is available. Let's discuss.

fbq18_1010.gif

The input voltage must be ______ in the given circuit to obtain the given output voltage.

A:
343 mV
B:
400 mV
C:
480 mV
D:
600 mV
Answer: B
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The 555 timer can be connected to operate a(n) ___________.
A:
astable multivibrator
B:
bistable multivibrator
C:
monostable multivibrator
D:
astable multivibrator and a monostable multivibrator
Answer: D
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The Q of a crystal _________.
A:
is extremely low
B:
is about 40 or so in most cases
C:
is extremely high
D:
none of the above
Answer: C
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fbq18_1012.gif

The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 Momega.gif, Zout = 80 omega.gif, and Aol = 250,000.

A:
4.7 komega.gif
B:
22.7 komega.gif
C:
3 Momega.gif
D:
68.6 komega.gif
Answer: A
No answer description is available. Let's discuss.
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