
Chapter 8: Operational Amplifier
Quiz
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Education
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University
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Practice Problem
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Medium
Rahayu Tukimin
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the voltage gain of an ideal inverting amplifier?
1 + Rf / Rin
Rf / Rin
-Rf / Rin
-(Rin / Rf)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a non-inverting amplifier, the input is applied to:
Inverting terminal
Non-inverting terminal
Both terminals
None of the above
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an INVERTING amplifier, if the input signal is 2V and the feedback resistors are Rf = 10 kΩ and Rin = 5 kΩ, what is the output voltage?
-4V
-2V
2V
4V
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For an ideal op-amp, the input impedance of a non-inverting amplifier is:
0
Infinite
Equal to the feedback resistor
Equal to the input resistor
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a summing amplifier with three inputs V1, V2, and V3, the output voltage is given by:
Vout = Rf (V1 + V2 + V3)
Vout = -(Rf/R1 V1 + Rf/R2 V2 + Rf/R3 V3)
Vout = (V1 + V2 + V3)/Rf
Vout = -V1 / Rf
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of a comparator circuit?
To amplify input signals
To compare two input voltages and output a high or low signal
To invert the input signal
To buffer the input signal
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a multistage amplifier, the total voltage gain is:
The sum of the voltage gains of each stage
The difference between the voltage gains of each stage
The product of the voltage gains of each stage
The voltage gain of the final stage
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