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Test: Operational Amplifier - Electronics and Communication Engineering (ECE) MCQ


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10 Questions MCQ Test - Test: Operational Amplifier

Test: Operational Amplifier for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Test: Operational Amplifier questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Operational Amplifier 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: Operational Amplifier below.
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Test: Operational Amplifier - Question 1

In a differential amplifier an idea! OMMR is

Test: Operational Amplifier - Question 2

The op-amp circuit shown below is initially nulled having a supply voltages of ± 15 V. The output voltage VQ is

Detailed Solution for Test: Operational Amplifier - Question 2

Given circuit represents an inverting summer using op-amp
Here,

R = R1 = R2 = R3 = Rf = 1 kΩ

and

V1 = +2 V, V2 = +3 V, V3 = +4 V

The output voltage is

Test: Operational Amplifier - Question 3

For the circuit shown below, the output voltage is given by

Detailed Solution for Test: Operational Amplifier - Question 3

Using superposition theorem, the output voltage is given by

Test: Operational Amplifier - Question 4

For an astabie multivibrator shown below, 

R1 = 116 KΩ, R2 = 100 KΩ, and ± Vsat = ± 14 V.

The time constant of the circuit to produce an output of frequency 1 kHz will be 

Detailed Solution for Test: Operational Amplifier - Question 4

The time period of the given a stablem ultivibrator circuit is given by

 

Test: Operational Amplifier - Question 5

An ideal operational amplifier has input impedance of

Detailed Solution for Test: Operational Amplifier - Question 5

For an ideal OPAMP, input impedance is infinite while output impedance is zero.

Test: Operational Amplifier - Question 6

For the op-amp circuit shown below, R1 = 1 kΩ and Rf = 10 kΩ. The feedback factor β of this amplifier is

Detailed Solution for Test: Operational Amplifier - Question 6

Given op -amp circuit re p re se n ts a c losed -loop non -inverting amplifier. The feed back factor is given by

Test: Operational Amplifier - Question 7

The order of input resistance in 741 OP-AMP is

Detailed Solution for Test: Operational Amplifier - Question 7

For a practical OPAMP in put impedance is of the order of 106Ω

Test: Operational Amplifier - Question 8

For a given op-amp, CMMR = 105 and differential gain Ad = 105. The common-mode gain of the op-amp is

Detailed Solution for Test: Operational Amplifier - Question 8

Test: Operational Amplifier - Question 9

An inverting amplifier using the 741C must have a fiat response upto 40 kHz. The gain of the amplifier is 10 and slew rate is 0.5 V/μS. The maximum peak-to-peak input signal that can be applied without distorting the output is approximately equal to

Detailed Solution for Test: Operational Amplifier - Question 9

We know that

Test: Operational Amplifier - Question 10

An idea! operational amplifier has
1. non-zero, off set voltage.
2. characteristics which do not drift with temperature.
3. an infinite voltage gain.
4. a CMMR more than 120 dB.
5. infinite bandwidth.
Of these statements:

Detailed Solution for Test: Operational Amplifier - Question 10

An ideal operational amplifier has

  • zero offset voltage
  • characteristics which do not drift with temperature
  • infinite voltage gain
  • infinite CMMR
  • infinite bandwidth

Hence, statements 2 , 3 and 5 are only correct.

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