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

Logical addition refers to operation of

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

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

• 0 A
• 1 B
• x C
• 
  D

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

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

The logic device that perform Boolean multiplication is.

• AND gate A
• OR gate B
• Inverter C
• None of these D

The heart of analog to digital converter (ADC) is

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

The half adder circuit has

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

Boolean algebra is also known as.

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

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y 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 Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D