July 2016 - Paper 2

6:   Which of the following logic expressions is incorrect ?
A.

1 ⊕ 0 = 1

B.

1 ⊕ 1 ⊕ 1 = 1

C.

1 ⊕ 1 ⊕ 0 = 1

D.

1 ⊕ 1 = 0

 
 

Option: C

Explanation :

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7:  

The IEEE-754 double-precision format to represent floating point numbers, has a length of _____ bits.

A.

16

B.

32

C.

48

D.

64

 
 

Option: D

Explanation :

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8:  

Simplified Boolean equation for the following truth table is :

x y z F
0 0 0 0
0 0 1 1
0 1 0 0
0 1 1 1
1 0 0 1
1 0 1 0
1 1 0 1
1 1 1 0
       

 

A.

F=yz'+ y'z

B.

F=xy'+x'y

C.

F=x'z+xz'

D.

F=x'z+xz'+xyz

 
 

Option: C

Explanation :

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9:  

The simplified form of a Boolean equation(­­­­­­­­AB­'+AB­'C+AC) (A­'C­'+B­') is :

A.

AB­'

B.

AB­'C

C.

A'B

D.

ABC

 
 

Option: C

Explanation :

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10:  

In a positive-edge-triggered JK flip-flop, if J and K both are high then the output will be _____ on the rising edge of the clock.

A.

No change

B.

Set

C.

Reset

D.

Toggle

 
 

Option: D

Explanation :

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