Electronics and Experimental Methods (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 40 - 41 of 50

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Question number: 40

» Electronics and Experimental Methods » Operational Amplifiers

Appeared in Year: 2011

MCQ▾

Question

A time varying signal is fed to an Op – Amp circuit with output signal as shown

A circuit diagram of an Op – amp

A Circuit Diagram of an Op – Amp

In figure a circuit diagram of an Op – amp is shown.

The circuit implements a (June)

Choices

Choice (4) Response

a.

Low pass filter with cutoff frequency 16 Hz

b.

Low pass filter with cutoff frequency 100 Hz

c.

High pass filter with cutoff frequency 16 Hz

d.

High pass filter with cutoff frequency 100 Hz

Question number: 41

» Electronics and Experimental Methods » Semiconductor Devices » Diodes

Appeared in Year: 2011

MCQ▾

Question

The figure below shows a voltage regulator utilizing a Zener diode of breakdown voltage 5V and a positive triangular wave input of amplitude 10V.

A circuit for a voltage regulator

A Circuit for a Voltage Regulator

In figure shows a voltage regulator utilizing a Zener diode of breakdown voltage 5V.

Graph of input voltage verses time

Graph of Input Voltage Verses Time

In figure positive triangular wave of voltage passing through Zener diode is shown.

For , the Zener regulates the output voltage by channeling the excess current through itself. Which of the following waveforms shows the current passing through the Zener diode? (December)

Choices

Choice (4) Response

a.

Current passing through Zener diode: Choice A

Current Passing Through Zener Diode: Choice A

In figure waveforms shows the current passing through Zener diode.

b.

Current passing through Zener diode: Choice B

Current Passing Through Zener Diode: Choice B

In figure waveforms shows the current passing through Zener diode.

c.

Current passing through Zener diode: Choice C

Current Passing Through Zener Diode: Choice C

In figure waveforms shows the current passing through Zener diode.

d.

Current passing through Zener diode: Choice D

Current Passing Through Zener Diode: Choice D

In figure waveforms shows the current passing through Zener diode.

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