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

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

• If A and B are applied, there will not be any output A
• If neither input is applied, there will be an output B
• If one input is applied there will not be any output C
• If one input is applied there will be an output D

• 0 A
• 1 B
• x C
• 
  D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 D

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

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

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

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

According to Boolean algebra A+A+......+A is

• A A
• n A B
• 0 C
• 1 D

Boolean algebra is also known as.

• logical algebra A
• control algebra B
• switching algebra C
• programming algebra 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 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

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

• 5A A
• A B
• A⁵ C
• 1 D

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

• x A
• y B
• 1+x C
• 1+y D

Which of the following gate is two level logic gate.

• OR gate A
• AND gate B
• EXCLUSIVE OR gate C
• NAND gate 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