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NCERT FINGERTIPS-COMMUNITCATION SYSTEMS-Propagation Of Electromagnetic Waves
- Ground wave have wavelength
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- The mode of propagation used by short wave broadcast services is
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- The skip zone in radio wave trasmission is that range where
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- Which one of the following statements is wrong?
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- The waves that are bent down by the ionosphere are
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- The maximum line-of -sight distance d(M) between two antennas having h...
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- Frequencies in the UHF range normally propagate by means of
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- If the whole earth is to be connected by LOS communication using spac...
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- A ground receiver in line-of-sight communication cannot receive direct...
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- Which of the following modes is used for line of sight
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- Through which mode of propagation, the radio waves can be sent from on...
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- Which of the following frequencies will be suitable for beyond the hor...
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- A TV transmitting antenna is 125 m tall. How much service area this tr...
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- A transmitting antenna at the top of the tower has a height 18 m and t...
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- A transmitting antenna of height 20 m and the receiving antenna of hei...
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- A TV transmission tower antenna is at a height of 20m. The percentage ...
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- By what percentage will the transmission range of a T.V. tower be affe...
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- A TV transmission tower has a height of 240 m. Signals broadcast from ...
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- A fax message is to be sent from Delhi to washington via a geostationa...
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- A 50 MHz sky wave sky wave takes 4.04 ms to reach a receiver via re-tr...
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