ECAT Pre Computer Science MCQ Test For Computer Chapter 5 With Answer

In Boolean algebra A.A.A.A.A

• 5A A
• A B
• A⁵ C
• 1 D

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

• Boolean addition A
• Boolean multiplication B
• Boolean complementation C
• All of the above D

Boolean algebra use which of the following to represent arithmetic quantities.

• decimal digits A
• exponents B
• binary bits C
• fractions D

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y D

• 0 A
• 1 B
• x C
• 
  D

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

• x + y __ A
• _x _y B
• x. y + x. y C
• x . y + x .y D

The half adder circuit has

• one input A
• two inputs B
• three inputs C
• always more than two inputs D

Logical addition refers to operation of

• OR gate A
• AND gate B
• NOT gate C
• invertr gate D

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

Boolean expression for NOR gate with two inputs x and y can be written as.

• x + y__ A
• x. y B
• x + y C
• 
  D

The heart of analog to digital converter (ADC) is

• comparator A
• pulse generator B
• voltage source C
• current source D

An AND gate will function as OR if.

• all the inputs to the gates are "I" A
• all the inputs are "O" B
• a Not gate is added to it C
• all the inputs and outputs are complemented D

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

• NOR gate A
• EXCLUSIVE OR gate B
• EXCLUSIVE NOT gate C
• OR gate D

NAND gates are preferred over others because these.

• have lower fabrication area A
• can be used to make any gate B
• consume least elctronic power C
• provide maximum density in a chip D

• A + B + C + D A
• 
  B
• A BC D C
• A + B + C + D D