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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Test: Difference Amplifiers - Electrical Engineering (EE) MCQ

Test: Difference Amplifiers - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test - Test: Difference Amplifiers

Test: Difference Amplifiers for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Difference Amplifiers questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Difference Amplifiers MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Difference Amplifiers below.
Solutions of Test: Difference Amplifiers questions in English are available as part of our course for Electrical Engineering (EE) & Test: Difference Amplifiers solutions in Hindi for Electrical Engineering (EE) course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Difference Amplifiers | 10 questions in 10 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Difference Amplifiers - Question 1
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For the difference amplifier which of the following is true?

Detailed Solution for Test: Difference Amplifiers - Question 1

All the statements are not true except for the fact that it responds only when there is difference between two signals only.

Test: Difference Amplifiers - Question 2
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 If for an amplifier the common mode input signal is vc, the differential signal id vd and Ac and Ad represent common mode gain and differential gain respectively, then the output voltage v0is given by

Detailed Solution for Test: Difference Amplifiers - Question 2

It is a standard mathematical expression.

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Test: Difference Amplifiers - Question 3
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. If for an amplifier v1 and v2 are the input signals, vc and vd represent the common mode and differential signals respectively, then the expression for CMRR (Common Mode Rejection Ratio) is

Detailed Solution for Test: Difference Amplifiers - Question 3

Note that all the expressions are identical.

Test: Difference Amplifiers - Question 4
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The problem with the single operational difference amplifier is its
Detailed Solution for Test: Difference Amplifiers - Question 4

Due to low input resistance a large part of the signal is lost to the source’s internal resistance.

Test: Difference Amplifiers - Question 5
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For the difference amplifier as shown in the figure show that if each resistor has a tolerance of ±100 ε % (i.e., for, say, a 5% resistor, ε = 0.05) then the worst-case CMRR is given approximately by (given K = R2/R1 = R4/R3)
Test: Difference Amplifiers - Question 6
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For the circuit given below determine the input common mode resistance.
Detailed Solution for Test: Difference Amplifiers - Question 6

 Parallel combination of series combination of R1 & R3 with the series combination of R3 and R4 is the required answer as is visible by the circuit.

Test: Difference Amplifiers - Question 7
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For the circuit shown below express v0 as a function of v1 and v2.
Detailed Solution for Test: Difference Amplifiers - Question 7

Considering the fact that the potential at the input terminals are identical and proceeding we obtain the given result.

Test: Difference Amplifiers - Question 8
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For the difference amplifier shown below, let all the resistors be 10kΩ ± x%. The expression for the worst-case common-mode gain is
Test: Difference Amplifiers - Question 9
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Determine Ad and Ac for the given circuit.
Detailed Solution for Test: Difference Amplifiers - Question 9

Consider the fact that the potential at the input terminals are identical and obtain the values of V1 and V2. Thus obtain the value of Vd and Vc.

Test: Difference Amplifiers - Question 10
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Determine the voltage gain for the given circuit known that R1 = R3 = 10kΩ abd R2 = R4 = 100kΩ.
Detailed Solution for Test: Difference Amplifiers - Question 10

Voltage gain is 100/10. 

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Important Questions for Difference Amplifiers

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