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

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

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

According to aborption law x+x.y=

• x A
• y B
• 1 + x C
• 1 + y D

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

Odd parity of a word can be conveniently tested by.

• OR gate A
• XOR gate B
• NOR gate C
• NAND gate D

If A and B are two 1-bit numbers, what logic gates will be required to test for A=B?

• NOR gate A
• EXCLUSIVE OR gate B
• EXCLUSIVE NOT gate C
• OR gate 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 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

According to Idempotent law , x + y = __________

• 1 A
• 0 B
• x C
• x . x D

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

• A A
• n A B
• 0 C
• 1 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 BC D C
• A + B + C + D D

Logical multiplication refers to operation of.

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

NAND gates are preferred over others because these.

• have lower fabrication area A
• can be used to make any gate B
• consume least elctronic power C
• provide maximum density in a chip D