GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 78 - 80 of 271

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Question number: 78

» Digital Circuits » Number Systems; Combinatorial Circuits » Logic Gates and Their Static CMOS Implementation

Appeared in Year: 2004

MCQ▾

Question

A digital system is required to amplify a binary-encoded audio signal. The user should be able to control the gain of the amplifier from minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary, is

Choices

Choice (4) Response

a.

6

b.

7

c.

5

d.

8

Question number: 79

» Digital Circuits » Sequential Circuits » Counters

Appeared in Year: 2011

MCQ▾

Question

The output of a 3-stage Johnson (twisted ring) counter is fed to a digital-to analog (D/A) converter as shown in the figure below. Assume all states of the counter to be unset initially. The waveform which represents the D/A converter output is

The combinational circuit consisting Johnson counter and DAC

The Combinational Circuit Consisting Johnson Counter and DAC

The combinational circuit consisting 3 stage Johnson counter and digital to analog converter

Choices

Choice (4) Response

a.

The waveform which represents the DAC converter output Choice:A

The Waveform Which Represents the DAC Converter Output Choice: A

The waveform which represents the DAC converter output

b.

The waveform which represents the DAC converter output Choice:B

The Waveform Which Represents the DAC Converter Output Choice: B

The waveform which represents the DAC converter output

c.

The waveform which represents the DAC converter output Choice:C

The Waveform Which Represents the DAC Converter Output Choice: C

The waveform which represents the DAC converter output

d.

The waveform which represents the DAC converter output Choice:D

The Waveform Which Represents the DAC Converter Output Choice: D

The waveform which represents the DAC converter output

Question number: 80

» Digital Circuits » Number Systems; Combinatorial Circuits » Logic Gates and Their Static CMOS Implementation

Appeared in Year: 2009

MCQ▾

Question

The full form of the abbreviations TTL and CMOS in reference to logic families are

Choices

Choice (4) Response

a.

Triple Transistor Logic and Chip Metal Oxide Semiconductor

b.

Tristate Transistor Logic and Chip Metal Oxide Semiconductor

c.

Transistor Transistor Logic and Complementary Metal Oxide Semiconductor

d.

Tristate Transistor Logic and Complementary Metal Oxide Silicon

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