Question # 1

According to Idempotent law , x + y = __________

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1

0

x

x . x

Which of the following statement is true in the case of AND gate with input A and B.

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If A and B are applied, there will not be any output

If neither input is applied, there will be an output

If one input is applied there will not be any output

If one input is applied there will be an output

If A and B are two 1-bit numbers, what logic gates will be required to test for A=B?

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NOR gate

EXCLUSIVE OR gate

EXCLUSIVE NOT gate

OR gate

In a three input NAND gate, if all the inputs are 1, the output is.

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0

1

3

indeterminate

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0

1

x

Boolean algebra is.

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used for arithmetical operation is ALU

an aid for binary conversion

useful for error detection and error correction

used to describe the behavior and structure of logic networks and as an aid in the design of logic system

According to aborption law x+x.y=

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x

y

1 + x

1 + y

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A + B + C + D

A + B C + D

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0

1

x

Boolean description for the exclusive OR gate for two inputs x and y can be written as.

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x + y __

_x _y

x. y + x. y

x . y + x .y

The logic device that perform Boolean multiplication is.

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AND gate

OR gate

Inverter

None of these

Which of the following gate is two level logic gate.

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OR gate

AND gate

EXCLUSIVE OR gate

NAND gate

The number of inputs to full adder are

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1

2

3

4

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x . y

x + y

x . y

Which of the following operations are used by Boolean algebra.?

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Boolean addition

Boolean multiplication

Boolean complementation

All of the above

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ECAT Computer Science Chapter 5 Boolean Algebra Online Test MCQs With Answers

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