BASIC ELECTRONICS

Logic Gates Quiz

1.An AND gate will function as OR if

A. either of the inputs is “1”
B. all the inputs and outputs are complemented.
C. all the inputs are ‘0’
D. all the inputs to the gates are “1”

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B. all the inputs and outputs are complemented.

2. The number of inputs and outputs in a full adder are

A. 2 and 1
B. 2 and 2
C. 3 and 2
D. 3 and 3

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C. 3 and 2

3. Which device has one input and many outputs

A. flip flop
B. multiplexer
C. demultiplexer
D. counter

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C. demultiplexer

4. 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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C. 64

5. A flip flop is a ____________

A. memory element.
B. logical element
C. arithmetic element
D. combinational circuit

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A. memory element

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

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

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

7.Which one of the following is a universal gate

A. NAND gate
B. AND Gate
C. OR Gate
D. EX-OR Gate

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A. NAND gate

8.Identify the logic gate given below.