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- 1. Multiple Choice
Which of the following two input logic functions can act as a Universal gate?
A ⊕ B
AB
(A+B)’
None of the above
- 2. Multiple Choice
The output of an AND gate will be 1 if
At least one of the inputs is at 1.
At most one of the inputs is at 0.
An even number of inputs must be at 1.
None of these.
- 3. Multiple Choice
XOR is known as
An even function
An odd function
Both even or odd function
None of these
- 4. Multiple Choice
which of the following functions is referred as complementary?
NAND
NOR
OR
NOT
- 5. Multiple Choice
A NAND gate is called a universal logic element because
All digital computers use NAND gates
All the minimisation techniques are applicable for optimum NAND gate realisation
Everybody use this gate
Any logic function can be realized by NAND gates alone
- 6. Multiple Choice
If a input signal a=11100 is applicable to a NOT gate ,its output signal is
00011
01001
00011
1000
- 7. Multiple Choice
When A and B represent the inputs of an Exclusive OR logic gate ,its output O will be
O=AB’+A’B
O=AB+A+B
O=A+B+(AB)'
None of these
- 8. Multiple Choice
A two input OR gate is designed for positive logic.Consider that this gate is operated with negative logic.Then the logic operation will be
OR
AND
NOR
EX-OR
- 9. Multiple Choice
AND-OR realisation is equivalent to
SOP
POS
K-map
None of these
- 10. Multiple Choice
OR-AND realisation is equivalent to
SOP
POS
K-map
None of these
- 11. Multiple Choice
The minimization of logic expression is done due to
Reduce space
Reduce number of gates
Reduce cost
All of these
- 12. Multiple Choice
Ex-OR gate can work as NOT gate provided
One input is fixed at logic level 1
One input is fixed at logic level 0
By shorting both inputs
None of the above
- 13. Multiple Choice
Which logic function has the output low only when both inputs are high?
AND
NAND
OR
NOR
- 14. Multiple Choice
An AND gate has 7 inputs.How many input words are in its truth table?
16
32
64
128
- 15. Multiple Choice
NAND-NAND circuit are equivalent to
AND-OR circuits
OR-XOR circuits
OR-NOT circuits
All of the above
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