DATA COMMUNICATIONS
DEPARTMENT OF CSE (3-1)
Faculty: Y.Phani Kumar & R.V.Shasanka
TUTORIAL-1 Date: 30-6-2015 & 1-07-2015
1.A signal with a power of 10mW is transmitted through coaxial cable. Signal level measured at the other end is 5mW. What is the loss of the cable?
2. A 50 ohm transmission line is terminated in an impedance of 20-j50.Calculate the reflection Coefficient?
TUTORIAL-2 Date: 7-7-2015 & 8-07-2015
1. The power content of the carrier of an AM wave is 5 kW.Determine the power content of each of the sidebands and the total power transmitted when the carrier is modulated 75%.
2. An AM wave has a power content of 800 W at its carrier frequency. Determine the power content of each of the sidebands for a 90% modulation.
TUTORIAL-3 Date: 14-7-2015 & 15-07-2015
1. If a 6-MHz band were being considered for use with the same standards that apply to the 88-108MHz band, how many FM stations can be accommodated?
TUTORIAL-4 Date: 21-7-2015 & 22-07-2015
1. Determine the bandwidth of a narrowband FM signal which is generated by a 4-kHz audio signal modulating a 125MHz carrier.
TUTORIAL-5 Date: 28-7-2015 & 29-07-2015
1. How much power will an antenna having a radiation resistance of 50 ohm radius when it is fed 20A?
2. What is the radiation resistance of an antenna which radiates 5 kW when it draws 15A?
TUTORIAL-6 Date: 4-8-2015 & 5-8-2015
1. An antenna having a radiation resistance of 75 ohm is radiating 10kW.How much current flows into the antenna?
TUTORIAL-7 Date: 11-8-2015 & 12-8-2015
1. Determine the Q of an antenna if it has a bandwidth 0f 0.6MHz and is cut to a frequency of 30MHz.
2. How many 600 kHz waves can be on a 5-mile transmission line simultaneously?
TUTORIAL-8 Date: 8-9-2015 & 9-9-2015
1. Determine the characteristic impedence of a transmission line which has a capacitance of
35pF/ft and inductance of 0.25 microH/ft.
2. Assume Q=50 find the F and the Bandwidth.
TUTORIAL-9 Date: 15-9-2015 & 16-9-2015
1. How many broadcast stations can be accommodated in a 100-kHz bandwidth if the highest modulating frequency is 5 kHz?
TUTORIAL-10 Date: 29-9-2015 & 30-9-2015
1. Find the bandwidth of a narrowband FM signal which is generated by a 8-kHz audio signal modulating a 250MHz carrier.
2. Antenna having a radiation resistance of 150ohm is radiating 20kW.How much current flows into the antenna?
Tutorial-11 Date: 6-10-2015 & 7-10-2015
1. Determine the power content of the carrier and each of the sidebands for an AM signal having a percent modulation of 80% and a total power of 2500W.
Digital Data Communications : CSE TUTORIALS - Y.Phanikumar, RV Shashank
Reviewed by Suresh Bojja
on
8/25/2015 04:12:00 AM
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