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

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y D

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  D

Logical addition refers to operation of

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

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

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

• 0 A
• 1 B
• x C
• 
  D

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

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 half adder circuit has

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

• x + y A
• 
  B
• 
  C
• 
  D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 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

• 0 A
• 1 B
• x C
• 
  D

The circuit that is used for parallel to serial conversion is

• decoder A
• encoder B
• multiplexer C
• demultiplexer D