11. The output of a AND gate is high if
- both inputs are low
- one input is high and the other is low
- both inputs are high
- none of the above
12. The complete set of only those logic gates designated as universal gates is
- NOT, OR and AND gates
- XNOR, NOR and NAND gates
- NOR and NAND gates
- XOR, NOR and NAND gates
13. The output of a logic gate is ‘1’ when all its inputs are at logic ‘0’. The gate is either
- a NAND or an XOR gate
- a NOR or an XOR gate
- an AND or an XNOR gate
- a NOR or an XNOR gate
14. An AND gate
- implements logic addition
- gives high output only when all inputs are low
- is equivalent to a series switching circuit
- is equivalent to a parallel switching circuit
15. An XOR gate produces output only when two inputs are
- high
- low
- different
- equal
16. The NANA-NAND realization is equivalent to
- AND-NOT realization
- AND-OR realization
- OR-AND realization
- NOT-OR realization
17. Which of the following comes under the class of combinational circuits?
- full adder
- parallel adder
- counter
- JK flipflop
- both 1 & 2
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