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SASKEN COMMUNICATION INDIA
There r 10 ques. in three sections each, thus total 30 ques. 4 choices were given.
1 mark for each ans. no negative marking.
q.1 if phase of different frequency components of signal vary linearly then they all
reach destination with delay
1) delay also vary linerly.
2) no change in delay,
3)
q.2 what is the relation in dbm and db?
1) same
2) dbm is 10 times db
3) db is 10 times dbm
4) db is relative measure and dbm is absolute measure.
q.3 difference in PSK and QPSK
a. slower sample rate
b. greater sample rate
c. slower bit rate
d. greater bit rate.
q.4 what is the main problem with power line communication
a. high audio signal generation
b. seperation of modulating and career signal
c. (something) low pass filtering
q.5 a signal is to be transmitted 1000km long distance sending 10 mbps . if signal
consists of 1000 bits/package and takes 5 microsecs. to transmit then how much
data is to be send such that line gets fully filled.
a. 100
b. 500
c
d.1000
q.6 if a process is wide sense stationary then
a. it's probability density function is also wss
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