CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 383 - 384 of 463

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Question number: 383

» 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 Equation , the Zener regulates the output voltage by channeling the excess current through itself. Which of the following waveforms shows the current Equation 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.

Question number: 384

» Electromagnetic Theory » Laplace and Poisson Equations

Appeared in Year: 2011

MCQ▾

Question

A static, spherically symmetric charge distribution is given by Equation , where A and K are positive constants. The electrostatic potential corresponding to this charge distribution varies with Equation as, (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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