Logic Gates

1. The output of a two input OR gate is zero, only when ______

• its both inputs are one

• its either input : is zero

• its both inputs are zero

• its either input is zero

The output of a two input AND gate is one only when_______

• its either input is one

• its both inputs are one

• its either input is zero

• its both inputs are zero

An AND gate_________

• is equivalent to a series switching circuit

• is equivalent to a parallel switching circuit

• is a universal gate

• is a combination of series and switching circuits

If two inputs of a NAND gate are shorted, then it is equivalent to________

• an OR gate

• a NOT gate

• AND gate

• NOR gate

The output logic level of an OR gate is one________

• if both inputs are zero

• only if both inputs are one

• if either or both inputs are one

• if the inputs are neither zero nor one

Which one of the following gates is not a basic gate______

• AND

• OR

• NOR

• NOTNOT

The inverter is__________

• an NOR gate

• A NOT gate

• an AND gate

• combination of OR and AND gate

A NOR gate gives ___________

• high output when both inputs are high

• high output when both inputs are low

• low output when both inputs are low

• high output when one input is low and the other input is high

For which logic gate the following statement is true ? All low inputs produce a high output_______

• OR

• AND

• NAND

• NOT

For which logic gate the following statement is true ? The output is high, if and only if all inputs are high_______

• AND

• OR

• NAND

• NOR