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Test: The Ideal Operational Amplifiers - Electronics and Communication Engineering (ECE) MCQ


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10 Questions MCQ Test - Test: The Ideal Operational Amplifiers

Test: The Ideal Operational Amplifiers for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Test: The Ideal Operational Amplifiers questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: The Ideal Operational Amplifiers MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: The Ideal Operational Amplifiers below.
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Test: The Ideal Operational Amplifiers - Question 1

What is the minimum number of terminals required in an IC package containing four operational amplifiers (quad op amps)?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 1

 The minimum no of pins required by dual-op-amp is 8. Each op-amp has 2 input terminals(4 pins) and one output terminal(2 pins). Another 2 pins are required for power.
Similarly, The minimum no of pins required by dual-op-amp is 14: 4*2 + 4*1 + 2 = 14.

Test: The Ideal Operational Amplifiers - Question 2

Which of the following is not a property of an ideal operational amplifier?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 2

An ideal operational amplifier does not has a zero input impedance.

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Test: The Ideal Operational Amplifiers - Question 3

In an ideal op amp the open-loop gain is 103. The op amp is used in a feedback circuit, and the voltages appearing at two of its three signal terminals are measured as v2 = 0V and v3 = 2V where it is assumed that v1 and v2 are input terminals and v3 is the output terminal. The value of the differential (vd) and common-mode (vcm)signal is

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 3

Vc = 0.5(V1 + V2) and
Vd = V2 – V1.

Test: The Ideal Operational Amplifiers - Question 4

Consider the figure given below. Known that vo = 4V and vi = 2V, determine the gain for the op amp assuming that it is ideal except for the fact that it has finite gain​

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 4

The Voltage at the positive input has to be -3.000v, vi = -3.020v
A = vo / vi – vr = -2 / -3.020 -(-3) = 100.

Test: The Ideal Operational Amplifiers - Question 5

 Which of the following is not a terminal for the operational amplifier?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 5

There are three terminals for the operational amplifier.

Test: The Ideal Operational Amplifiers - Question 6

 Operational amplifiers are

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 6

It is another way to refer to op amps based on its terminal characteristics.

Test: The Ideal Operational Amplifiers - Question 7

Express the input voltages v1 and v2 in terms of differential input (vd) and common-mode input(vc). Given v2 > v2.

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 7

This is the correct mathematical representation.

Test: The Ideal Operational Amplifiers - Question 8

 What is the minimum number of pins for a dual operational amplifier IC package?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 8

The minimum no of pins required by dual-op-amp is 8. Each op-amp has 2 input terminals(4 pins) and one output terminal(2 pins). Another 2 pins are required for power.

Test: The Ideal Operational Amplifiers - Question 9

For an ideal operational amplifier (except for the fact that it has finite gain) one set of the value for the input voltages (v2 is the positive terminal v1 is the negative terminal) and output voltage (v0) as determined experimentally is v1= 2.01V, v2=2.00V and v0= -0.99V. Experiment was carried with different values of input and output voltages. Which of the following is not possible considering experimental error?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 9

Only option d does not satisfies the mathematical relation between the given quantities.

Test: The Ideal Operational Amplifiers - Question 10

What are the units of slew rate?

Detailed Solution for Test: The Ideal Operational Amplifiers - Question 10

 These units are obtained from the definition of the term slew rate.

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