Digital Circuits-Sequential Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 1 - 4 of 66

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Question 1

Sequential Circuits
Latches and Flip-Flops

Appeared in Year: 2008

Question

MCQ▾

For each of the positive edge-triggered J K flip - flop used in the following figure, the propagation delay is .

The Sequential Circuit Using JK Flip-Flop with Its Clock Pulse

Which of the following wave forms correctly represents the output at

Choices

Choice (4)Response

a.

The Waveform Which Correctly Represents Output: Choice A

b.

The Waveform Which Correctly Represents Output: Choice B

c.

The Waveform Which Correctly Represents Output: Choice C

d.

The Waveform Which Correctly Represents Output: Choice D

Question 2

Sequential Circuits
Counters

Appeared in Year: 2004

Question

MCQ▾

In the modulo-6 ripple counter shown in figure, the output of the 2- input gate is used to clear the J-K flip-flop The 2-input gate is

The Modulo-6 Ripple Counter Using J-K Flip-Flop

Choices

Choice (4)Response

a.

An OR gate

b.

A NOR gate

c.

An AND gate

d.

A NAND gate

Question 3

Sequential Circuits
Latches and Flip-Flops

Appeared in Year: 2001

Question

MCQ▾

In the figure, the J and K inputs of all the four Flip-Flips are made high. The frequency of the signal at output Y is,

Find the Signal at Output Y

Choices

Choice (4)Response

a.

0.91 kHz

b.

0.833 kHz

c.

0.77 kHz

d.

1 kHz

Question 4

Sequential Circuits
Shift-Registers and Finite State Machines

Appeared in Year: 2007

Question

MCQ▾

In the Digital-to-Analog converter circuit shown in the figure below, V = 10 and R = 10 K

The Circuit of Digital-To-Analog Converter

The current and voltage is

Choices

Choice (4)Response

a.

62.5 A, -3.125V

b.

250 A, 6.250 V

c.

31.25 A, -0.781V

d.

125 A, -1.562 V

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