NEW
Font size
WorksheetsQuiz 4 on Operational Amplifiers
Total questions: 20
Worksheet time: 10mins
What is the primary function of an operational amplifier (op-amp)?
To decrease the amplitude of signals
To amplify electrical signals
To convert digital signals to analog
To store electrical energy
What is the ideal input impedance of an op-amp?
Zero ohms
Infinite ohms
1000 ohms
10 ohms
What happens when the output of an op-amp is connected to its inverting input?
It creates a positive feedback loop
It stabilizes the output
It increases the gain
It causes the output to oscillate
Which of the following is a characteristic of a non-inverting amplifier?
It requires a feedback resistor
The output is in phase with the input
The gain is less than one
The output is inverted
What is the purpose of negative feedback in an op-amp circuit?
To increase the gain
To stabilize the output
To reduce input impedance
To create distortion
In an inverting amplifier, what is the relationship between the input voltage and output voltage?
Vout = Vin + 1
Vout = -Vin
Vout = Vin/2
Vout = Vin
What is the function of a summing amplifier?
To amplify a single input signal
To subtract two input signals
To add multiple input signals
To filter out noise
What is the output of a differentiator circuit?
The sum of the input signals
The integral of the input signal
The derivative of the input signal
The average of the input signals
Which of the following describes the output impedance of an ideal op-amp?
Infinite output impedance
High output impedance
Zero output impedance
Variable output impedance
What is the effect of high input impedance in an op-amp?
Reduces noise
Decreases accuracy
Increases current draw
Increases loading effect
What is the gain of a non-inverting amplifier with resistors R1 and R2?
R1/R2
1 - R2/R1
1 + R2/R1
R2/R1
What happens in a positive feedback configuration of an op-amp?
The output is zero
The output is inverted
The output oscillates
The output stabilizes
What is the primary use of an integrator circuit?
To filter out high frequencies
To differentiate signals
To amplify high frequencies
To sum multiple signals
What is the output voltage of a differencing amplifier?
Vout = V+ - V-
Vout = V- - V+
Vout = V+ + V-
Vout = V+ * V-
What is the typical slew rate of an op-amp?
100 V/μs
50 V/μs
0.5–20 V/μs
0.1 V/μs
What is the primary advantage of using a differential amplifier?
It amplifies only the difference between two signals
It provides a single-ended output
It requires less power
It is simpler to design
What is the typical bandwidth of an operational amplifier?
DC to 1 MHz
DC to 100 kHz
DC to 10 MHz
DC to 1 GHz
In a voltage follower configuration, what is the relationship between input and output voltage?
Vout = Vin
Vout = 2Vin
Vout = -Vin
Vout = Vin/2
What is the output voltage of a non-inverting amplifier when the input voltage is 5V and the gain is 2?
5V
10V
2.5V
0V
What is the primary characteristic of a voltage follower configuration?
It has a gain of 1
It inverts the input signal
It requires two input signals
It amplifies the input signal
