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Communication Systems VSA Solutions
- Q15.15(i): Which of the following would produce analog signals and which would produce digital signals? (i) A vibrating tuning fork.
- Q15.15(i): Which of the following would produce analog signals and which would produce digital signals? (i) A vibrating tuning fork.
- Q15.15(ii): Which of the following would produce analog signals and which would produce digital signals? (ii) Musical sound due to a vibrating sitar string.
- Q15.15(ii): Which of the following would produce analog signals and which would produce digital signals? (ii) Musical sound due to a vibrating sitar string.
- Q15.15(iii): Which of the following would produce analog signals and which would produce digital signals? (iii) Light pulse.
- Q15.15(iii): Which of the following would produce analog signals and which would produce digital signals? (iii) Light pulse.
- Q15.15(iv): Which of the following would produce analog signals and which would produce digital signals? (iv) Output of NAND gate.
- Q15.15(iv): Which of the following would produce analog signals and which would produce digital signals? (iv) Output of NAND gate.
- Q15.16: Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
- Q15.16: Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?
- Q15.17: Two waves $A$ and $B$ of frequencies 2 MHz and 3 MHz, respectively are beamed in the same direction for communication via sky wave. Which one of these is likely to travel longer distance in the ionosphere before suffering total internal reflection?
- Q15.17: Two waves (A) and (B) of frequencies 2 MHz and 3 MHz, respectively are beamed in the same direction for communication via sky wave. Which one of these is likely to travel longer distance in the ionosphere before suffering total internal reflection?
- Q15.18: The maximum amplitude of an A.M. wave is found to be 15 V while its minimum amplitude is found to be 3 V. What is the modulation index?
- Q15.18: The maximum amplitude of an A.M. wave is found to be 15 V while its minimum amplitude is found to be 3 V. What is the modulation index?
- Q15.19: Compute the LC product of a tuned amplifier circuit required to generate a carrier wave of 1 MHz for amplitude modulation.
- Q15.19: Compute the (LC) product of a tuned amplifier circuit required to generate a carrier wave of 1 MHz for amplitude modulation.
- Q15.20: Why is a AM signal likely to be more noisy than a FM signal upon transmission through a channel?
- Q15.20: Why is a AM signal likely to be more noisy than a FM signal upon transmission through a channel?
Other Exercises for CBSE - Class 12 Physics Communication Systems
Chapters in CBSE - Class 12 Physics
- Electric Charges and Fields
- Electrostatic Potential and Capacitance
- Current Electricity
- Moving Charges and Magnetism
- Magnetism and Matter
- Electromagnetic Induction
- Alternating Current
- Electromagnetic Waves
- Ray Optics and Optical Instruments
- Wave Optics
- Dual Nature of Radiation and Matter
- Atoms
- Nuclei
- Semiconductor Electronics
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