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# Practice Quiz in Operational Amplifiers Part 1

This is the Online Practice Quiz in Operational Amplifiers Part 1 from the book, Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad. If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

### Start Part I of the Online Practice Quiz

#### Quiz in Operational Amplifiers

Question 1. At what input voltage level does the output voltage level become numerically equal to the value of the common-mode gain of the amplifier?

A. Vi1 = โVi2 = 0.25 V

B. Vi1 = โVi2 = 0.50 V

C. Vi1 = โVi2 = 0.75 V

D. Vi1 = โVi2 = 1.00 V

Question 2. The summing amplifier contains an inverting amplifier.

A. True

B. False

Question 3. What is the difference voltage if the inputs are an ideal opposite signal?

A. The differential gain times twice the input signal.

B. The differential gain times the input signal.

C. The common-mode gain times twice the input signal.

D. The common-mode gain times the input signal.

Question 4. Which of the following circuits is referred to as a BiMOS circuit?

A. Bipolar and FET

B. Bipolar and MOSFET

C. Opposite-type MOSFETs

D. None of these

Question 5. What is the level of the current through the amplifier input(s) to ground in an op-amp?

A. Virtually zero

B. 1.7 mA

C. 2.8 mA

D. 3.3 mA

Question 6. Which of the following circuit conditions affect(s) the output offset voltage of an op-amp?

A. An input offset voltage, VIO

B. An input offset current, IIO

C. Both an input offset voltage, VIO and an input offset current, IIO

D. None of these

Question 7. What is the open-loop gain of an op-amp at the gain-bandwidth product of the op-amp?

A. 200,000

B. 50,000

C. 200

D. 1

Question 8. Calculate the output voltage if R1 = R2 = R3 = 100 โฆ, Rf = 1 kโฆ, and V1 = V2 = V3 = 50 mV.

A. โ1.5 V

B. 1.5 V

C. 0.5 V

D. โ0.5 V

Question 9. What is the difference voltage if the inputs are an ideal in-phase signal?

A. The differential gain times twice the input signal.

B. The differential gain times the input signal.

C. The common-mode gain times twice the input signal.

D. The common-mode gain times the input signal.

Question 10. At what input voltage level does the output voltage level become numerically equal to the value of the differential gain of the amplifier?

A. Vi1 = โVi2 = 0.25 V

B. Vi1 = โV i2 = 0.50 V

C. Vi1 = โV i2 = 0.75 V

D. Vi1 = โVi2 = 1.00 V

### More Practice Quiz in Operational Amplifiers

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

Practice Quiz Part 4

Practice Quiz Part 5

Practice Quiz Part 6

### See: Complete List of Practice Quizzes

Note: After taking this particular quiz, you can proceed to check all the topics.

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