Define Following Terms: (1) Phase Modulation (2) Modulation Index (3) Image Frequency
[3 marks]State Parseval’s theorem
[4 marks]What is modulation? Why modulation required? Describe in detail.
[7 marks]Draw and explain parallel tuned circuits in detail.
[3 marks]Explain power spectral density and its significance in communication
[4 marks]Draw and explain circuit of envelope detector for AM
[7 marks]Compare Double-sideband suppressed carrier (DSBSC) modulation with Single sideband suppressed carrier (SSBSC) modulation in detail.
[7 marks]State and prove the following properties of Fourier transform. (1) Time shifting (2) Frequency shifting
[3 marks]Explain FET balanced modulator in brief.
[4 marks]Explain Carson’s rule in FM? Explain Armstrong method of FM generation.
[7 marks]Describe briefly shot noise, partition noise and flicker noise. Why they are generated?
[3 marks]Describe Vestigial Sideband (VSB) modulation technique.
[4 marks]List all the basic FM demodulators. Draw and explain Foster Seeley Discriminator in detail
[7 marks]Give comparison between AM and FM systems.
[3 marks]Explain FM stereo broadcast system in brief.
[4 marks]Explain the noise factor of a lossy network. Also explain noise temperature in detail.
[7 marks]Explain square law detector in brief.
[3 marks]Explain Pre-emphasis and de-emphasis circuits
[4 marks]Explain Basic slope detector and Foster Seeley discriminator in detail.
[7 marks]Explain AM receiver in brief
[3 marks]Explain tuning ranges and adjacent channel selectivity in brief.
[4 marks]Explain Super-heterodyne principal and super-heterodyne receiver. OR1
[7 marks]What is amateur radio? Explain in brief.
[3 marks]Explain skin effect in detail.
[4 marks]What is Ham radio? Discuss the importance of Ham radio during natural calamines.
[7 marks]