Communication Systems questions
74 published questions with worked solutions.
- What should be the height of transmitting antenna and the population covered if the television telecast is to cover a radius of...Not in JEE or NEET syllabus
- An audio signal = 20 sin2 (1500 t) amplitude modulates a carrier _c = 80 sin2 (100,000 t). The value of percent modulation is...Not in JEE or NEET syllabus
- The amplitude of upper and lower side bands of A.M. wave where a carrier signal with frequency 11.21 MHz, peak voltage 15 V is...Not in JEE or NEET syllabus
- The maximum amplitude for an amplitude modulated wave is found to be 12V while the minimum amplitude is found to be 3V. The...Not in JEE or NEET syllabus
- A transmitting antenna has a height of 320 m and that of receiving antenna is 2000 m. The maximum distance between them for...Not in JEE or NEET syllabus
- If the sum of the heights of transmitting and receiving antennas in the line of sight of communication is fixed at 160 m, then...Not in JEE or NEET syllabus
- If a message signal of frequency 'f_m' is amplitude modulated with a carrier signal of frequency 'f_c' and radiated through an...Not in JEE or NEET syllabus
- Given below are two statement : Statement-I: A speech signal of 2 kHz is used to modulate a carrier signal of 1 MHz. The band...Not in JEE or NEET syllabus
- A message signal of frequency 20 kHz and peak voltage of 20 volt is used to modulate a carrier wave of frequency 1 MHz and peak...Not in JEE or NEET syllabus
- In amplitude modulation, the message signal V_ m(t) =10 (2 10^5t)volts and Carrier signal V_ c(t) =20 (2 10^7t)volts. The...Not in JEE or NEET syllabus
- A transmitting antenna at top of a tower has a height of 50 m and the height of receiving antenna is 80 m. What is range of...Not in JEE or NEET syllabus
- An amplitude modulated wave is represented by C_m(t) = 10(1 + 0.2 cos12560t) sin(111 × 10^4t) volts. The modulating frequency in...Not in JEE or NEET syllabus
- If the highest frequency modulating a carrier is 5 kHz, then the number of AM broadcast stations accommodated in a 90 kHz...Not in JEE or NEET syllabus
- The maximum and minimum amplitude of an amplitude modulated wave are 16V and 8V respectively. The modulation index for this...Not in JEE or NEET syllabus
- A baseband signal of 3.5 MHz frequency is modulated with a carrier signal of 3.5 GHz frequency using amplitude modulation method....Not in JEE or NEET syllabus
- In AM modulation, a signal is modulated on a carrier wave such that maximum and minimum amplitudes are found to be 6 V and 2 V...Not in JEE or NEET syllabus
- Match List I and List II List I: A. Facsimile B. Guided media Channel C. Frequency Modulation D. Digital Single List II: I....Not in JEE or NEET syllabus
- The maximum and minimum voltage of an amplitude modulated signal are 60 V and 20 V respectively. The percentage modulation index...Not in JEE or NEET syllabus
- A sinusoidal wave y(t) = 40 (10 10^ 6 t) is amplitude modulated by another sinusoidal wave x(t) = 20 (1000 t). The amplitude of...Not in JEE or NEET syllabus
- Choose the correct statement for amplitude modulation :Not in JEE or NEET syllabus
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