CSIR Physical Sciences: Questions 204 - 205 of 401

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Question number: 204

» Electronics and Experimental Methods » Microprocessor and Microcontroller Basics

Appeared in Year: 2011

MCQ▾

Question

The pins 0, 1, 2 and 3 of part A of a microcontroller are connected with resistors to drive an LED at various intensities as shown in the figure.

 Four pins connected with resistor

Four Pins Connected With Resistor

In figure pins 0, 1, 2, 3 of part A of a microcontroller are connected with resistors to drive an LED at various intensities.

For VCC=4.2V and a voltage drop of 1.2V across the LED, the range (maximum current) and resolution (Step size) of the drive current are, respectively, - (December)

Choices

Choice (4) Response

a.

7.5mAand0.5mA

b.

15.0mAand1.0mA

c.

4.0mAand0.5mA

d.

4.0mAand1.0mA

Question number: 205

» Mathematical Methods of Physics » Elements of Complex Analysis

Appeared in Year: 2014

MCQ▾

Question

The function Φ(x,y,z,t)=cos(zvt)+Re(sin(x+iy)) satisfies the equation (June)

Choices

Choice (4) Response

a.

1V22Φt2=(2x2+2y2+2z2)Φ

b.

(1V22t2+2z2)Φ=(2x2+2y2)Φ

c.

(1V22t22z2)Φ=(2x2+2y2)Φ

d.

(2z21V22t2)Φ=(2x2+2y2)Φ

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