VIVEKANAND PRATISHTHAN SENIOR COLLAGE , SAVKHEDA

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F.Y.B.Sc | SEM-I | ELE-102

Student Name

What is the base of hexadecimal number system?

2 points

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What is the base of octal number system?

2 points

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What are the symbols used to represent any binary numbers?

2 points

1,2

2,3

0,1,2

0,1

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Conversion of decimal number 13 to its octal number equivalent is

2 points

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Grey code of binary number 1111 is

2 points

1100

1000

1010

none of these

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The output of an AND gate is HIGH when

2 points

all inputs are LOW

any INPUT is LOW

any input is HIGH

all inputs are HIGH

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Which of the following gate is called universal gate?

2 points

AND

NAND

XOR

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Which of the examples below expresses the distributive law of boolean alfebra?

2 points

( A + B ) + C = A + ( B + C )

A * ( B * C ) = ( A * B ) + C

A + ( B + C ) = ( A * B ) + ( A * C)

A * ( B + C ) = ( A * B ) + ( A * C )

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Which of the examples below expresses the comutative law of multplication?

2 points

A * B = B + A

A + B = B + A

A * ( B * C ) = ( A * B ) * C

A * B = B * A

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The enable input is also called

2 points

carry

parallel adder

strobe

gate C

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how many select lines would be required for an 8 - line to 1 - line multiplexer

2 points

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Which digital system transaltes coded charecters into a more useful form?

2 points

encoder

display

counter

decoder

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How is an encoder different from decoder?

2 points

the output of an encoder in a binary code for 1-of-N input

the output of a decoder is a binary code for 1-of-N input

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A circuit that responds to a specific set of signals to produce a related digital signal output is called as:

2 points

BCD matrix

display driver

encoder

decoder

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BCD to decimal decoder has

2 points

10 inputs and 10 outputs

4 inputs and 10 outputs

10 inputs and 4 outputs

none of above

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A group of flipslops sensative to pulse duration is called __________

2 points

latch

multiplexer

demultiplexer

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A __________ is a bistable electronic circuit that has two stable states.

2 points

multivibrator

flip flop

decoder

encoder

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A flip flop is a ____________

2 points

Storage device

Hub

Bistable device

chip

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To completely load and than unload an 3-bit serial in serial out shift register require how many clock pulses ?

2 points

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A modulus-12 ring counter requires a minimum of _________.

2 points

10 flip flops

12 flip flops

6 flip flops

2 flip flops

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