Explain the skin effect in brief
[3 marks]Define communication. Draw The basic block diagram of communication system explain the function of each block.
[4 marks]Define term modulation in context to communication process. List all the reasons of modulation required for communication
[7 marks]Distinguish between signal energy and signal power
[3 marks]Compare FM and AM processes.
[4 marks]Define the teams (i) Signal Bandwidth (ii) Power Spectral Density (iii) Distortion. Also prove Frequency Shifting property of Fourier transform.
[7 marks]Explain Double sideband suppressed carrier (DSBSC) modulation with mathematical analysis
[7 marks]State and prove Time Shifting property of Fourier Transform.
[3 marks]Explain the process of an SSB-SC signal generation using phase shifting method with relevant mathematical expressions
[4 marks]Determine the power content of the carrier and each of the sidebands for and AM signal having a percentage modulation of 80 % and total power of 2500 W.
[7 marks]With related to Amplitude modulation discuss following parameters:
[3 marks]Bandwidth requirement (ii) Power distribution in sidebands and carrier
[ marks]Draw and explain circuit of envelope detector for AM
[4 marks]A 10kW carrier wave is amplitude modulated at 80% depth of modulation by a sinusoidal modulating signal. Calculate the sideband power, total power and transmission efficiency of the AM wave
[7 marks]Discuss the interferences in angle modulated systems
[3 marks]Explain the thermal noise in brief
[4 marks]List all the basic FM demodulators. Draw and explain Foster Seeley Discriminator in detail
[7 marks]Explain the delayed AGC with diagram.
[3 marks]Define noise factor and noise temperature.
[4 marks]Explain Carson’s rule in FM? Explain Armstrong method of FM generation
[7 marks]Define : (i)Sensitivity (ii)Selectivity (iii) Image frequency
[3 marks]Discuss drawbacks of direct method for FM generation
[4 marks]Explain Super heterodyne principal and super heterodyne receiver.
[7 marks]List main function of radio receiver
[3 marks]State and prove scaling property of Fourier transform.
[4 marks]What is Ham radio? Discuss the importance of Ham radio during natural calamines.
[7 marks]