adplus-dvertising
1. Match the following IC families with their basic circuits :
a. TTL                          1. NAND
b. ECL                         2. NOR
c. CMOS 3. Inverter

Code : a b c
a. 1 2 3
b. 3 2 1
c. 2 3 1
d. 2 1 3
Answer: (a).1 2 3

2. What is the result of the following expression
(1 & 2) + (3 & 4)
a. 1
b. 2
c. 3
d. 0
Answer: (d).0

3. Match the following :
a. TTL                          1. High fan out
b. ECL                         2. Low propagation delay
c. CMOS                     3. High power dissipation

Code : a b c
a. 3 2 1
b. 1 2 3
c. 1 3 2
d. 3 1 2
Answer: (a).3 2 1

4. Identify the operation which is commutative but not associative ?
a. OR
b. NOR
c. EX-OR
d. NAND
Answer: (b).NOR

5. Extremely low power dissipation and low cost per gate can be achieved in:
a. MOS ICs
b. CMOS ICs
c. TTL ICs
d. ECL ICs
Answer: (b).CMOS ICs

6. An example of a universal building block is
a. EX-OR gate
b. AND gate
c. OR gate
d. NOR gate
Answer: (d).NOR gate

7. The dual of a Boolean expression is obtained by interchanging
a. Boolean sums and Boolean products
b. Boolean sums and Boolean products or interchanging 0's and 1 's
c. Boolean sums and Boolean products and interchanging 0's & 1's
d. Interchanging 0's and 1 's
Answer: (c).Boolean sums and Boolean products and interchanging 0's & 1's

8. Given that (292)10 = (1204)x in some number system x. The base x of that number system is
a. 2
b. 8
c. 10
d. None of the above
Answer: (d).None of the above

9. The sum of products, expansion for the function
F(x, y, z) = (x, + y) z' is given as
a. x ' y ' z + x y z ' +  x y z '
b. x y z +  x y z' +  x Y' z '
c. x y' z' +  x ' y ' z ' +  x y z '
d. x y z '  + x Y ' z '  + x ' y z '
Answer: (d).x y z '  + x Y ' z '  + x ' y z '

10. The BCD adder to add two decimal digits needs minimum of
a. 6 full adders and 2 half adders
b. 5 full adders and 3 half adders
c. 4 full adders and 3 half adders
d. 5 full adders and 2 half adders
Answer: (d).5 full adders and 2 half adders

Page 1 of 9