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

The heart of analog to digital converter (ADC) is

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

Pick up wrong logical expression

• 
  A
• 
  B
• 
  C
• 
  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

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

• A + B + C + D A
• 
  B
• A + B C + D C
• 
  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 algebra use which of the following to represent arithmetic quantities.

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

According to Boolean algebra x + 1 = ______________

• 0 A
• 1 B
• x C
• 
  D

In a three input NAND gate, if all the inputs are 1, the output is.

• 0 A
• 1 B
• 3 C
• indeterminate D

The commutative law in Boolean Algebra, where a, b and c are binary number is.

• a+0=a A
• a+1=1 B
• a+b=b+a C
• a. (b+c) = a.b +a.c. 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

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