# Digital Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 131 - 134 of 271

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## Question 131

Digital Circuits
ROM, SRAM, DRAM

Appeared in Year: 2007

### Question

MCQ▾

The circuit diagram of a standard TTL NOT gate is shown in the figure. , the modes of operation of the transistors will be,

### Choices

Choice (4)Response

a.

: Saturation; saturation; saturation; normal active

b.

: Normal active; cut-off; cut-off; saturation

c.

: Revere active; saturation; saturation; cut-off

d.

: Revere active; normal active; saturation; cut-off

## Question 132

Digital Circuits
Logic Gates and Their Static CMOS Implementation

Appeared in Year: 2010

### Question

MCQ▾

For the output F to be 1 in the logic circuit shown, the input combination should be

### Choices

Choice (4)Response

a.

A = 0, B = 1, C = 0

b.

A = 1, B = 1, C = 0

c.

A = 1, B = 0, C = 0

d.

All a., b. and c. are correct

## Question 133

Digital Circuits
Arithmetic Circuits, Code Converters, Multiplexers, Decoders and PLAs

Appeared in Year: 2017 (UGC-NET)

### Question

MCQ▾

The addition of two binary variables A and B results into a SUM and a CARRY output. Consider the following expressions for SUM and CARRY outputs.

(1)

(2)

(3)

(4)

Which of the following expressions are correct? (November paper 2)

### Choices

Choice (4)Response

a.

(1) and (4)

b.

(1) and (3)

c.

(2) and (3)

d.

(4) and (2)

## Question 134

Digital Circuits
Boolean Algebra, Minimization of Functions

Appeared in Year: 2017 (UGC-NET)

### Question

MCQ▾

The Boolean SOP expression obtained from the truth table is:

 Inputs Output A B C X

(November paper 2)

### Choices

Choice (4)Response

a.

b.

c.

d.

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