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Application: The dipole antenna. A dipole antenna is 1 m long and is fed with a current of amplitude 2 A. Find the radiated power of the antenna:
(a) At 540 kHz (lowest AM band frequency).
(b) At 1.6 MHz (highest AM band frequency).
(c) To what do you attribute the difference between the radiated powers in (a) and (b)?
a steam power plant implements an ideal reheat rankine cycle. steam enters the inlet of the high-pressure turbine at 8
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Steam enters the condenser (heat exchanger) of a steam power plant at 20kPa and a quality of 95% with a mass flow rate of 20,000kg/h. A nearby river is used as a source of cooling water where the water will circulate through the tubes within the cond..
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a stone of 20 kg of mass is held 15 m above a tank containing 200 kg of water. the stone water and the air are at the
An irreversible gas-turbine power plant has a compressor with an inlet state of 1 bar and 22°C and an outlet state of 4 bars and 470 K. The turbine has an inlet state of 4 bars and 1200 K and an exhaust state of 1 bar and 900 K. The environment is at..
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10 kg of gaseous oxygen is compressed in a piston-cylinder device from an initial state of .8 m3kg to a final state of
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