GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 120 - 124 of 271

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Question number: 120

» Digital Circuits » Data Converters » Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2002

MCQ▾

Question

The number of comparators required in a 3-bit comparators type ADC

Choices

Choice (4) Response

a.

8

b.

3

c.

7

d.

2

Question number: 121

» Digital Circuits » Number Systems; Combinatorial Circuits » Boolean Algebra, Minimization of Functions

Appeared in Year: 2000

MCQ▾

Question

For the logic circuit shown in the figure, the simplified Boolean expression for the output Y is,

The diagram contains NAND and NOR gates.

The Diagram Contains NAND and NOR Gates.

Figure has 3 NAND gates and 2 NOR gates.

Choices

Choice (4) Response

a.

A + B+ C

b.

C

c.

A

d.

B

Question number: 122

» Digital Circuits » 8-Bit Microprocessor (8085) » Programming

Appeared in Year: 2004

MCQ▾

Question

It is desired to multiply the numbers 0AH by 0BH and store the result in the accumulator. The numbers are available in registers B and C respectively. A part of the 8085 program for this purpose is given below:

  1. MVI A00H
  2. LOOP ------
  3. ------
  4. -----
  5. HLT
  6. END

The sequence of instructions to complete the program would be

Choices

Choice (4) Response

a.

ADD B, DCR C, JNZ LOOP

b.

JNX LOOP, ADD B, DCR C

c.

DCR C, JNZ LOOP, ADD B

d.

ADD B, JNZ LOOP, DCR C

Question number: 123

» Digital Circuits » 8-Bit Microprocessor (8085) » Programming

Appeared in Year: 2006

MCQ▾

Question

Following is the segment of a 8085 assembly language program

  1. LXI SPEFFF H
  2. CALL 3000 H
  3. :
  4. :
  5. :
  6. 3000 H LXI H3CF4
  7. PUSH PSW
  8. SPHL
  9. POP PSW
  10. RET

On completion of RET execution, the contents of SP is

Choices

Choice (4) Response

a.

EFFD H

b.

3CF0 H

c.

3CF8 H

d.

EFFF H

Question number: 124

» Digital Circuits » Sequential Circuits » Latches and Flip-Flops

Appeared in Year: 2001

MCQ▾

Question

A sequential circuit using D flip-flop and logic gates is shown in the figure, where X and Y are the inputs and Z is the inputs. The circuit is

The sequential circuit using D-flip-flop and logic gates.

The Sequential Circuit Using D-Flip-Flop and Logic Gates.

The sequential circuit using D-flip-flop and logic gates to be simplify.

Choices

Choice (4) Response

a.

S R - Flip-Flop with inputs X = R and Y = S

b.

S R - Flip-Flop with inputs X = S and Y = R

c.

J K - Flip-Flop with inputs X = J and Y = K

d.

J K - Flip-Flop with input X = K and Y = J

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