Electronics and Experimental Methods-Operational Amplifiers (CSIR Physical Sciences): Questions 1 - 4 of 6

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Question number: 1

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2013

MCQ▾

Question

Consider the op – amp circuit shows in the figure.

An op – amp circuit diagram

An Op – Amp Circuit Diagram

In figure an op – amp circuit diagram is shown.

If the input is a sinusoidal wave Vi=5sin(1000t) , then the amplitude of output V0 is – (December)

Choices

Choice (4) Response
a.

5

b.

52

c.

52

d.

522

Question number: 2

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2012

MCQ▾

Question

In the Op – amp circuit shown in the figure below, the input voltage Vi is 1V. The value of the output V0 is – (June)

An operational amplifier circuit

An Operational Amplifier Circuit

Figure shows the op – amp circuit of input voltage Vi is 1V.

Choices

Choice (4) Response
a.

0.25V

b.

0.50V

c.

0.33V

d.

1.00V

Question number: 3

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2014

MCQ▾

Question

An op-amp based voltage follower – (June)

Choices

Choice (4) Response
a.

Is useful for converting a high impedance source into a low impedance source

b.

Has infinitely high closed loop gain.

c.

Is useful for converting a low impedance source into a high impedance source.

d.

Has infinitely high closed loop output impedance.

Question number: 4

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2014

MCQ▾

Question

Consider the amplifier circuit comprising of two

An amplifier circuit composed of two op – amps

An Amplifier Circuit Composed of Two Op – Amps

In figure am amplifier circuit is shown, which is made up of two op – amps A1 and A2.

If the input ac signal has an impedance of 50kΩ , which of the following statements is true? (December)

Choices

Choice (4) Response
a.

A1 is required in the circuit if the output has to follow the phase of the input signal.

b.

A1 is required in the circuit because the source impedance is much greater than r

c.

A1 is required in the circuit because the source impedance is much less than R

d.

A1 can be eliminated from the circuit without affecting the overall gain

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