The radio waves of frequency 30 MHz to 3...

The radio waves of frequency 30 MHz to 300 MHz belong to

High frequency band

Very high frequency band

Ultra high frequency band

Super high frequency band

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A plane electromagnetic wave of frequency 20 MHz travels through a space along x-direction. If the electric field vector at a certain point in space is 6 Vm^(-1) ,then what is the magnetic field vector at that point?

A plane electromagnetic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time, vec(E)=6.3hat(j)V//m . What is B at this point ?

An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm. (a) Calculate the speed of the wave. (b) Name the medium through which it is travelling.

Two radio transmitters radiating in phase are located at point A and B, 250 m apart. The ratio wave have frequency of 3MHz. A radio receiver is moved out from point B along a line BC (perpendicular to AB). The distance from B beyond which the detector does not detect any minima si :

Give (brief) reasons for the following : (a) We use 'sky wave' mode of propagation of electromagnetic waves, only for frequencies upto 30 to 40 MHz. (b) The LOS communication, via space waves, has a (fairly) limited range. (c) A mobile phone user gets uninterrupted link to talk while walking.

RESONANCE ENGLISH-COMMUNICATION SYSTEMS-Exercise 2

The frequencies of electromagnetic waves employed in space communicati...
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The wavelength of electromagnetic waves employed for space communicati...
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The radio waves of frequency 30 MHz to 300 MHz belong to
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The maximum range of ground or surface wave propagation depends on
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In which frequency range space waves are normally propagated
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For VHF television broadcasting, the frequency employed is generally
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The sound waves after being converted into electrical waves are not tr...
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The process of superimposing signal frequency (i.e., audio wave) on th...
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A TV transmission tower has a height of 240m. Signals broadcast from t...
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Range of frequencies alotted for commerical FM radio broad cast is
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Intelset satellite works as a -
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The space waves which are affected seriously by atmospheric condition ...
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A T.V. tower has a height 150m. What is the population density around ...
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Which of the following is not a transducer?
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Long distance radio broadcasts use short wave bands. Explain why?
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The carrier frequency generated by a circuit containing 1 nF capacitor...
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the attenution in optical fibre is mainly due to
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The maximum distance upto which TV transmission from a TV tower of hei...
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AM is used for broadcasting because
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Range of frequencies alotted for commerical FM radio broad cast is
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