Electronics and Experimental Methods-Digital Techniques and Applications (CSIR Physical Sciences): Questions 1 - 3 of 8

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Question number: 1

» Electronics and Experimental Methods » Digital Techniques and Applications » Registers

Appeared in Year: 2013

MCQ▾

Question

The insulation resistance R of an insulated cable is measured by connecting it in parallel with a capacitor C, a voltmeter, and battery B as shown. The voltage across the cable dropped from 150 V to 15 V, 1000 seconds after the switch S is 5μF then its insulation resistance is approximately, (June)

Circuit diagram consist of R and C

Circuit Diagram Consist of R and C

In figure the insulating resistance R of an insulated cable is measured by connecting it in parallel with a capacitor C, a voltmeter and battery B.

Choices

Choice (4) Response

a.

108Ω

b.

106Ω

c.

107Ω

d.

109Ω

Question number: 2

» Electronics and Experimental Methods » Digital Techniques and Applications » Registers

Appeared in Year: 2013

MCQ▾

Question

If one of the inputs of J – K flip – flop is high and the other is low, then the outputs Q and Q¯ – (December)

Choices

Choice (4) Response

a.

Oscillate between low and high in race – around condition

b.

Follow the inputs and the circuit acts like an R – S flip – flop

c.

Are opposite to the inputs

d.

Toggle and the circuit acts like a T flip – flop

Question number: 3

» Electronics and Experimental Methods » Digital Techniques and Applications » Counters

Appeared in Year: 2011

MCQ▾

Question

A counter consists of four flip – flops connected as shown in the figure

A counter consists of four flip - flops

A Counter Consists of Four Flip - Flops

In figure a counter consists of four JK flip – flops is shown.

If the counter is initialized as A0A1A2A3=0110 , the state after the next clock pulse is – (December)

Choices

Choice (4) Response

a.

1100

b.

0001

c.

1000

d.

0011

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