# 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.

If the input is a sinusoidal wave, then the amplitude of output is – (December)

### Choices

Choice (4) Response

a.

5

b.

c.

d.

## 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 is 1V. The value of the output is – (June)

### Choices

Choice (4) Response

a.

b.

c.

d.

## 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

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

### Choices

Choice (4) Response

a.

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

b.

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

c.

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

d.

can be eliminated from the circuit without affecting the overall gain

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