Digital Electronics MCQ Questions & Answers

Section 1 Section 2 Section 3 Section 4

1.
The fan put of a 7400 NAND gate is

A. 2TTL

B. 5TTL

C. 8TTL

D. 10TTL

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2.
The universal gate is ___________

A. NAND gate

B. OR gate

C. AND gate

D. None of the above

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3.
An OR gate has 6 inputs. The number of input words in its truth table are

A. 6

B. 32

C. 64

D. 128

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4.
In which of the following base systems is 123 not a valid number?

A. Base 10

B. Base 16

C. Base 8

D. Base 3

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5.
In case of OR gate, no matter what the number of inputs, a

A. 1 at any input causes the output to be at logic 1

B. 1 at any input causes the output to be at logic 0

C. 0 any input causes the output to be at logic 0

D. 0 at any input causes the output to be at logic 1.

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6.
The number of Boolean functions that can be generated by n variables is equal to

A. 2ⁿ

B. 2^2ⁿ

C. 2^{2n - 1}

D. 2^{n - 1}

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7.
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

A. State Reduction

B. State Minimization

C. State Assignment

D. State Evaluation

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8.
Positive logic in a logic circuit is one in which

A. logic 0 and 1 are represented by 0 and positive voltage respectively

B. logic 0 and, -1 are represented by negative and positive voltages respectively

C. logic 0 voltage level is higher than logic 1 voltage level

D. logic 0 voltage level is lower than logic 1 voltage level.

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9.
Digital circuit can be made by the repeated use of ___________

A. OR gates

B. NOT gates

C. NAND gates

D. None of the above

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10.
Pick out the CORRECT statement:

A. In a positional number system, each symbol represents the same value irrespective of its position

B. The highest symbol in a position number system as a value equal to the number of symbols in the system

C. It is not always possible to find the exact binary

D. Each hexadecimal digit can be represented as a sequence of three binary symbols.

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Digital Electronics MCQ Questions & Answers | ECE

1. The fan put of a 7400 NAND gate is

Answer & Solution

2. The universal gate is ___________

Answer & Solution

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

Answer & Solution

4. In which of the following base systems is 123 not a valid number?

Answer & Solution

5. In case of OR gate, no matter what the number of inputs, a

Answer & Solution

6. The number of Boolean functions that can be generated by n variables is equal to

Answer & Solution

7. Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

Answer & Solution

8. Positive logic in a logic circuit is one in which

Answer & Solution

9. Digital circuit can be made by the repeated use of ___________

Answer & Solution

10. Pick out the CORRECT statement:

Answer & Solution

Read More Section(Digital Electronics)

1.
The fan put of a 7400 NAND gate is

2.
The universal gate is ___________

3.
An OR gate has 6 inputs. The number of input words in its truth table are

4.
In which of the following base systems is 123 not a valid number?

5.
In case of OR gate, no matter what the number of inputs, a

6.
The number of Boolean functions that can be generated by n variables is equal to

7.
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

8.
Positive logic in a logic circuit is one in which

9.
Digital circuit can be made by the repeated use of ___________

10.
Pick out the CORRECT statement: