Exercise: Basic Op Amp Circuits

Questions for: Basic Op Amp Circuits

For a Wien-bridge oscillator to produce a sustained sine-wave output, the phase shift around the positive feedback loop must be greater than 0°.
A:
True
B:
False
C:
D:
Answer: B
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To operate properly, an oscillator requires an external ac input signal.
A:
True
B:
False
C:
D:
Answer: B
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When used as a comparator, an op-amp is wired in a closed-loop configuration.
A:
True
B:
False
C:
D:
Answer: B
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The output voltage of a summing amplifier is proportional to the product of the input voltages.
A:
True
B:
False
C:
D:
Answer: B
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The control element in a basic shunt voltage regulator is a zener diode.
A:
True
B:
False
C:
D:
Answer: B
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