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

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

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 operations are used by Boolean algebra.?

• Boolean addition A
• Boolean multiplication B
• Boolean complementation C
• All of the above D

Boolean algebra is also known as.

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

In Boolean algebra A.A.A.A.A

• 5A A
• A B
• A⁵ C
• 1 D

The number of inputs to full adder are

• 1 A
• 2 B
• 3 C
• 4 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

In Boolean algebra A.0 is

• 0 A
• 1 B
• A+0 C
• A+1 D

The circuit that is used for parallel to serial conversion is

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

Boolean algebra is.

• used for arithmetical operation is ALU A
• an aid for binary conversion B
• useful for error detection and error correction C
• used to describe the behavior and structure of logic networks and as an aid in the design of logic system D

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

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

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

The logic device that perform Boolean multiplication is.

• AND gate A
• OR gate B
• Inverter C
• None of these 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 heart of analog to digital converter (ADC) is

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