MCQ on Logic Gates

The universal gate is

• NAND gate

• OR gate

• AND gate

• None of the above

The inverter is

• OR gate

• NOT gate

• AND gate

• None of the above

The NOR gate is OR gate followed by

• AND gate

• NAND gate

• NOT gate

• None of the above

When an input signal 1 is applied to a NOT gate, the output is

• 0

• 1

• Either 0 & 1

• None of the above

In Boolean algebra, the bar sign (-) indicates

• OR operation

• AND operation

• NOT operation

• None of the above

An OR gate has 4 inputs. One input is high and the other three are low. The output is

• Low

• High

• alternately high and low

• may be high or low depending on relative magnitude of inputs

Both OR and AND gates can have only two inputs.

• True

• False

The output will be a LOW for any case when one or more inputs are zero in a/an

• OR Gate

• NOT Gate

• AND Gate

• NAND Gate

What are the symbols used to represent digits in the binary number system?

• 0,1

• 0,1,2

• 0 through 8

• 1,2

All logic operations can be obtained by means of

• AND and NAND operations

• OR and NOR operations

• OR and NOT operations

• NAND and NOR operations