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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
Top Tutors who teach Communication Systems
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Tilakwadi, Belgaum
6 yrs of
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33 students
1000 hrs of classes completed
450
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I am a retired Executive Engineer from Karnataka Power Corporation. I was giving tuition at my project quarters to Children of my colleagues, for 1st and 2nd Pre-University level(Class 11 & 12 Level), at Sharavathi Hydro Electric Project, Karnataka, for 6 years. I was teaching Physics, Chemistry and Maths. I am a BE (Electrical) Graduate, from Bangalore University during April 1970. I have a very strong passion for Teaching. I used to give practical examples from my field of service, to develop their fundamental concepts/interest and enthuse them to gain a deeper insight into the in the subject. I used to purchase books of foreign authors to portray the lessons through explanatory photos and diagrams, as there were no electronic educational aids, available during that period (1993 to 1998). Throughout my service in Hydel and Thermal Generating Stations, in design, construction, erection, commissioning and maintenance divisions, I was very much involved/got opportunities in imparting the subject knowledge relevant to the work to, orient my subordinates and colleagues. With the present electronic educational aids , I am confident that I will be able to better justice in teaching the subject.
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Bhelagaon Rd Bhela, Bela Bhela
2 yrs of
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2 students
33 hrs of classes completed
500
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I am online tutor providing tuition for students and i have good experience and knowledge of teaching students and knowledge of subjects. I will help you in getting best marks in examination and in understanding the subjects
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Tollygunge, Kolkata
5 yrs of
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3 students
38 hrs of classes completed
800
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I have been giving tuitions to Class 12 students since October 2015. I was then in 2nd year of BSc Physics from the renowned 200 years old university, Presidency University. In total I taught 2 Class 12 students in Kolkata and 9 Class 12 students in Delhi. Currently I am teaching a Class 11 student from JNU Quarters Maths, Physics and Chemistry via Zoom app. I have whiteboard, colourful pens and other requirements to ease the teaching in a great way.
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KK Nagar Sector 10, Chennai
20 yrs of
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31 students
1904 hrs of classes completed
700
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I am S.Perumal from Chennai. I am a Assistant Professor of Mathematics. My qualifications are M.Sc., M.Phil., B.Ed. in Mathematics. I am pursuing Ph.D. in mathematics also. Also I am the tutor/trainer of the Urbanpro. Actually, I have very good experience in the field of teaching as more than 23 years. My Qualifications are M.Sc., M.Phil., B.Ed., (Ph.D) in Mathematics. I am allotting 13 regular online classes for a month. I am using zoom app for online classes and using latest technology to write and explain the mathematics problems. My teaching methodology is to make mathematics is easy for students. Initially I give the formulas to students and then I ask them regularly. Also I am solving MCQ. I am teaching mathematics in a simple way. I can make mathematics is easy for students. Always my students got very good marks in exams. I conduct the test and I send the marks to them. Also resolve the students mistakes. After completing every chapters ,i will conduct mathematical quiz for that chapters Revisions: I will revise previous years question papers. After this type of my coaching’s many of my students got 100 marks in their board examination. My teaching type is friendly manner.
It was good, was able to understand the concept I was struggling in and was able to clarify doubts too, barely any issues were network-related, really good for online.
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Kalyan East, Thane
8 yrs of
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5 students
259 hrs of classes completed
800
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I am profressional in teaching class 12 mathematics since 8 years .Teaching multiple boards and produced excellent results in math.
