Digital Electronics Objective Questions – Set 3

Try mock test on digital electronics and check questions with corresponding answers.

Digital Electronics Mock Test

1. When will be the output of a NOT gate is LOW ?

A) the input is LOW.
B) the input is HIGH.
C) none of the answers
D) the input is HIGH and LOW.

2. When will be the output of an exclusive-OR gate is HIGH?

A) The inputs are equal
B) All inputs are LOW
C) All inputs are HIGH
D) The inputs are different

3. How many input and output required for multiplexer?

A) One input and many output
B) None of the answers
C) One input and one output
D) Many input and one output

4. What is the requirement of full substractor circuit?

A) Two inputs and two outputs
B) Three inputs and two outputs
C) Three inputs and one output
D) Two inputs and three outputs

5. Which is the example of digital device from the given option ?

A) Record players
B) Thermistors
C) Microprocessors
D) Sensors

6. Choose the option which is not a code conversion standard

A) BCD code
B) Gray code
C) Excess-3 code
D) Truth code

7. The time required for a gate to change its output is called as

A) Decay time
B) run time
C) propagation time
D) start time

8. What is the radix of octal number system?

A) 2
B) 16
C) 8
D) 10

9. How many input and output required for demultiplexer?

A) one input and many output
B) one input and one output
C) number of selection inputs and one output
D) None of the answers

10. A single flip-flop can be cleared (reset) to

A) Both 1 and 0
B) 1
C) 0
D) None of the answers

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All 30 questions and answers are available in the Quiz.

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Take All Tests :

• Digital Electronics Quiz – Set 1
• Digital Electronics Quiz – Set 2
• Digital Electronics Quiz – Set 3
• Digital Electronics Quiz – Set 4
• Digital Electronics Quiz – Set 5
• Digital Electronics Quiz – Set 6
• Digital Electronics Quiz – Set 7
• Digital Electronics Quiz – Set 8
• Digital Electronics Quiz – Set 9
• Digital Electronics Quiz – Set 10
• Digital Electronics Quiz – Set 11