First communication satellites used frequencies of

Related MCQs

• Number of satellites in geostationary orbits are
• Geostationary satellites have lifetime of nearly
• High quality music only needs frequencies up to
• At the end of communication system, the signal is converted from radio to
• Equation of motion can be used for
• Unit for pressure used in weather maps is millibar. 1 millibar is equal to
• An instrument commonly used for the measurement of atmospheric pressure is known as
• Device used to store energy in electrical circuits is
• Value of sampled signal is used to produce a
• F = BIL can only be used if the magnetic field and electric current are