WorksheetsCommunication
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
Entropy unit is :
a)
bit / symbol
b)
symbol / bit
c)
bit / sec
d)
sec / bit
2.
Channel capacity unit is :
a)
bit / symbol
b)
symbol / bit
c)
bit / sec
d)
sec / bit
3.
In PCM
if N = 4, calculate M
if N = 4, calculate M
a)
2
b)
4
c)
8
d)
16
4.
In digital coding
Efficiency =
Efficiency =
a)
Hs / Hc
b)
Hs * Hc
c)
Hc / Hs
d)
100 %
5.
Fano coding used for
a)
Channel coding
b)
Source coding
c)
Probability of errors
d)
Noise detection
6.
DPSK used which logic gate ?
a)
OR gate
b)
XOR gate
c)
XNOR gate
d)
NAND gate
7.
fs min must be ...
a)
= 2W
b)
> 2W
c)
< 2W
d)
Ts/2
8.
in FSK system, Logic 1 presented as ..
a)
sin2 (Δw)
b)
-sin2 (Δw)
c)
sin2 (w1)
d)
sin2 (w1)
100 %
