Propagation of Waves in Atmosphere
« Previous Topic: Modulation Last Topic in »
PHXII15:COMMUNICATION SYSTEMS

356841 Is it necessary for a transmitting antenna to be at the same height as that of the receiving antenna for line of sight communication? A TV transmitting antenna is \(81\;m\) tall. How much service area can it cover, if the receiving antenna is at the ground level?

1 \(3260\;k{m^2}\)
2 \(3800\;k{m^2}\)
3 \(3320\;k{m^2}\)
4 \(7400\;k{m^2}\)
NCERT Exemplar
PHXII15:COMMUNICATION SYSTEMS

356842 To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to

1 \(\dfrac{\lambda}{4}\)
2 \(2 \lambda\)
3 \(\dfrac{\lambda}{2}\)
4 \(\lambda\)
JEE - 2023
PHXII15:COMMUNICATION SYSTEMS

356843 For transmitting audio signal properly

1 It is first superimposed on high frequency carrier wave
2 It is first superimposed on low frequency carrier wave
3 It is sent directly without superimposing on any wave
4 It is superposed with carrier wave of high velocity
PHXII15:COMMUNICATION SYSTEMS

356844 A TV transmission tower antenna is at a height of \(20 {~m}\). What is the percentage increase in range covered in case if the receiving antenna is at ground level to that at a height of \(25 {~m}\) ? (Take radius of earth \(=6.4 \times 10^{6} {~m}\) and \(\sqrt{5}=2.24\) )

1 \(112\,\% \)
2 \(190\,\% \)
3 \(145\,\% \)
4 \(103\,\% \)
NEET DIGITAL LIBRARY
PHXII15:COMMUNICATION SYSTEMS

356841 Is it necessary for a transmitting antenna to be at the same height as that of the receiving antenna for line of sight communication? A TV transmitting antenna is \(81\;m\) tall. How much service area can it cover, if the receiving antenna is at the ground level?

1 \(3260\;k{m^2}\)
2 \(3800\;k{m^2}\)
3 \(3320\;k{m^2}\)
4 \(7400\;k{m^2}\)
NCERT Exemplar
PHXII15:COMMUNICATION SYSTEMS

356842 To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to

1 \(\dfrac{\lambda}{4}\)
2 \(2 \lambda\)
3 \(\dfrac{\lambda}{2}\)
4 \(\lambda\)
JEE - 2023
PHXII15:COMMUNICATION SYSTEMS

356843 For transmitting audio signal properly

1 It is first superimposed on high frequency carrier wave
2 It is first superimposed on low frequency carrier wave
3 It is sent directly without superimposing on any wave
4 It is superposed with carrier wave of high velocity
PHXII15:COMMUNICATION SYSTEMS

356844 A TV transmission tower antenna is at a height of \(20 {~m}\). What is the percentage increase in range covered in case if the receiving antenna is at ground level to that at a height of \(25 {~m}\) ? (Take radius of earth \(=6.4 \times 10^{6} {~m}\) and \(\sqrt{5}=2.24\) )

1 \(112\,\% \)
2 \(190\,\% \)
3 \(145\,\% \)
4 \(103\,\% \)
Join With Us for More Updates
PHXII15:COMMUNICATION SYSTEMS

356841 Is it necessary for a transmitting antenna to be at the same height as that of the receiving antenna for line of sight communication? A TV transmitting antenna is \(81\;m\) tall. How much service area can it cover, if the receiving antenna is at the ground level?

1 \(3260\;k{m^2}\)
2 \(3800\;k{m^2}\)
3 \(3320\;k{m^2}\)
4 \(7400\;k{m^2}\)
NCERT Exemplar
PHXII15:COMMUNICATION SYSTEMS

356842 To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to

1 \(\dfrac{\lambda}{4}\)
2 \(2 \lambda\)
3 \(\dfrac{\lambda}{2}\)
4 \(\lambda\)
JEE - 2023
PHXII15:COMMUNICATION SYSTEMS

356843 For transmitting audio signal properly

1 It is first superimposed on high frequency carrier wave
2 It is first superimposed on low frequency carrier wave
3 It is sent directly without superimposing on any wave
4 It is superposed with carrier wave of high velocity
PHXII15:COMMUNICATION SYSTEMS

356844 A TV transmission tower antenna is at a height of \(20 {~m}\). What is the percentage increase in range covered in case if the receiving antenna is at ground level to that at a height of \(25 {~m}\) ? (Take radius of earth \(=6.4 \times 10^{6} {~m}\) and \(\sqrt{5}=2.24\) )

1 \(112\,\% \)
2 \(190\,\% \)
3 \(145\,\% \)
4 \(103\,\% \)
For More Updates join with Us
PHXII15:COMMUNICATION SYSTEMS

356841 Is it necessary for a transmitting antenna to be at the same height as that of the receiving antenna for line of sight communication? A TV transmitting antenna is \(81\;m\) tall. How much service area can it cover, if the receiving antenna is at the ground level?

1 \(3260\;k{m^2}\)
2 \(3800\;k{m^2}\)
3 \(3320\;k{m^2}\)
4 \(7400\;k{m^2}\)
NCERT Exemplar
PHXII15:COMMUNICATION SYSTEMS

356842 To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to

1 \(\dfrac{\lambda}{4}\)
2 \(2 \lambda\)
3 \(\dfrac{\lambda}{2}\)
4 \(\lambda\)
JEE - 2023
PHXII15:COMMUNICATION SYSTEMS

356843 For transmitting audio signal properly

1 It is first superimposed on high frequency carrier wave
2 It is first superimposed on low frequency carrier wave
3 It is sent directly without superimposing on any wave
4 It is superposed with carrier wave of high velocity
PHXII15:COMMUNICATION SYSTEMS

356844 A TV transmission tower antenna is at a height of \(20 {~m}\). What is the percentage increase in range covered in case if the receiving antenna is at ground level to that at a height of \(25 {~m}\) ? (Take radius of earth \(=6.4 \times 10^{6} {~m}\) and \(\sqrt{5}=2.24\) )

1 \(112\,\% \)
2 \(190\,\% \)
3 \(145\,\% \)
4 \(103\,\% \)
NEET DIGITAL LIBRARY