Propagation of Waves in Atmosphere
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PHXII15:COMMUNICATION SYSTEMS

356811 The waves relevant to telecommunications are

1 Visible light
2 Infrared
3 Ultraviolet
4 Microwave
PHXII15:COMMUNICATION SYSTEMS

356812 The maximum distance between the transmitting and receiving TV towers is \(72 \mathrm{~km}\). If the ratio of the heights of the TV transmitting tower to receiving tower is \(16: 25\), the heights of the transmitting and receiving towers are

1 \(51.2\;m;80\;m\)
2 \(40\;m;80\;m\)
3 \(80\;m;125\;m\)
4 \(25\;m;75\;m\)
PHXII15:COMMUNICATION SYSTEMS

356813 Microwave link repeaters are typically \(50\;km\) apart

1 Because of atmospheric attenuation
2 Because of the earth's curvature
3 To ensure that signal voltage may not harm the repeater
4 To reduce the interference of microwaves
PHXII15:COMMUNICATION SYSTEMS

356814 Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

1 \(10MHz\)
2 \(10kHz\)
3 \(1000GHz\)
4 \(1GHz\)
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PHXII15:COMMUNICATION SYSTEMS

356811 The waves relevant to telecommunications are

1 Visible light
2 Infrared
3 Ultraviolet
4 Microwave
PHXII15:COMMUNICATION SYSTEMS

356812 The maximum distance between the transmitting and receiving TV towers is \(72 \mathrm{~km}\). If the ratio of the heights of the TV transmitting tower to receiving tower is \(16: 25\), the heights of the transmitting and receiving towers are

1 \(51.2\;m;80\;m\)
2 \(40\;m;80\;m\)
3 \(80\;m;125\;m\)
4 \(25\;m;75\;m\)
PHXII15:COMMUNICATION SYSTEMS

356813 Microwave link repeaters are typically \(50\;km\) apart

1 Because of atmospheric attenuation
2 Because of the earth's curvature
3 To ensure that signal voltage may not harm the repeater
4 To reduce the interference of microwaves
PHXII15:COMMUNICATION SYSTEMS

356814 Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

1 \(10MHz\)
2 \(10kHz\)
3 \(1000GHz\)
4 \(1GHz\)
NCERT Exemplar
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PHXII15:COMMUNICATION SYSTEMS

356811 The waves relevant to telecommunications are

1 Visible light
2 Infrared
3 Ultraviolet
4 Microwave
PHXII15:COMMUNICATION SYSTEMS

356812 The maximum distance between the transmitting and receiving TV towers is \(72 \mathrm{~km}\). If the ratio of the heights of the TV transmitting tower to receiving tower is \(16: 25\), the heights of the transmitting and receiving towers are

1 \(51.2\;m;80\;m\)
2 \(40\;m;80\;m\)
3 \(80\;m;125\;m\)
4 \(25\;m;75\;m\)
PHXII15:COMMUNICATION SYSTEMS

356813 Microwave link repeaters are typically \(50\;km\) apart

1 Because of atmospheric attenuation
2 Because of the earth's curvature
3 To ensure that signal voltage may not harm the repeater
4 To reduce the interference of microwaves
PHXII15:COMMUNICATION SYSTEMS

356814 Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

1 \(10MHz\)
2 \(10kHz\)
3 \(1000GHz\)
4 \(1GHz\)
NCERT Exemplar
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII15:COMMUNICATION SYSTEMS

356811 The waves relevant to telecommunications are

1 Visible light
2 Infrared
3 Ultraviolet
4 Microwave
PHXII15:COMMUNICATION SYSTEMS

356812 The maximum distance between the transmitting and receiving TV towers is \(72 \mathrm{~km}\). If the ratio of the heights of the TV transmitting tower to receiving tower is \(16: 25\), the heights of the transmitting and receiving towers are

1 \(51.2\;m;80\;m\)
2 \(40\;m;80\;m\)
3 \(80\;m;125\;m\)
4 \(25\;m;75\;m\)
PHXII15:COMMUNICATION SYSTEMS

356813 Microwave link repeaters are typically \(50\;km\) apart

1 Because of atmospheric attenuation
2 Because of the earth's curvature
3 To ensure that signal voltage may not harm the repeater
4 To reduce the interference of microwaves
PHXII15:COMMUNICATION SYSTEMS

356814 Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

1 \(10MHz\)
2 \(10kHz\)
3 \(1000GHz\)
4 \(1GHz\)
NCERT Exemplar
NEET DIGITAL LIBRARY