Q. In a differential amplifier configuration, what does the output voltage depend on?
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A.
The difference between the two input voltages
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B.
The sum of the two input voltages
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C.
Only one input voltage
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D.
The power supply voltage
Solution
The output voltage of a differential amplifier depends on the difference between the two input voltages.
Correct Answer:
A
— The difference between the two input voltages
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Q. In a summing amplifier, how is the output voltage calculated?
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A.
Vout = Rf * (V1 + V2)
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B.
Vout = (V1 + V2)/Rf
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C.
Vout = Rf * (V1 - V2)
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D.
Vout = (V1 - V2)/Rf
Solution
In a summing amplifier, the output voltage is calculated as Vout = Rf * (V1 + V2).
Correct Answer:
A
— Vout = Rf * (V1 + V2)
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Q. What happens to the output of an operational amplifier when the input voltage exceeds the supply voltage?
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A.
Output saturates
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B.
Output increases linearly
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C.
Output decreases
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D.
Output becomes zero
Solution
When the input voltage exceeds the supply voltage, the output of the operational amplifier saturates.
Correct Answer:
A
— Output saturates
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