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

According to Idempotent law , x + y = __________

• 1 A
• 0 B
• x C
• x . x D

The output will be one in case any input is one in the case of.

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

Boolean algebra is.

• used for arithmetical operation is ALU A
• an aid for binary conversion B
• useful for error detection and error correction C
• used to describe the behavior and structure of logic networks and as an aid in the design of logic system D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

Logical addition refers to operation of

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

• x . y A
• x + y B
• x . y C
• x . y D

The 'Boolean Algebra' is based on the premise that

• there are two states A
• differential equations can be solved by analog circuits. B
• either a statement is true or false C
• arithmetic operations can be carried out D

• x + y A
• 
  B
• 
  C
• 
  D

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

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

• 5A A
• A B
• A⁵ C
• 1 D

Logical multiplication refers to operation of.

• OR gate A
• AND gate B
• NOT gate C
• inverter gater D

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

• 0 A
• 1 B
• 3 C
• indeterminate D

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

Which of the following function is referred as the complementary.?

• OR function A
• NOT function B
• NAND function C
• AND function D

According to absorption law x. (x+y) =

• x A
• y B
• 1+x C
• 1+y D