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

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

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

• x A
• y B
• 1+x C
• 1+y D

The logic device that perform Boolean multiplication is.

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

Logical multiplication refers to operation of.

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

An OR gate has 6 input. The number of input words in its truth table are.

• 6 A
• 32 B
• 64 C
• 128 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 heart of analog to digital converter (ADC) is

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

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

• x + y A
• 
  B
• 
  C
• 
  D

• 0 A
• 1 B
• x C
• 
  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

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