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Application: λ/4 transformer. A two-wire transmission line has characteristic impedance of 300 Ω and connects to an antenna. The line is long, the antenna has an impedance of 200 Ω and operates at a wavelength of 3.8 m. To match the line and load, a quarter- wavelength transformer is connected on the line, but the location at which the transformer may be connected is 10 m from the antenna or larger. Calculate:
(a) The closest location at which the transformer may be connected.
(b) For the result in (a), calculate the characteristic impedance of the transformer section.
(c) Calculate the standing wave ratios on the sections of line between the transformer and antenna and between transformer and generator.
If the mass is released from this position, how long will the mass vibrate and at what distance will it stop from the unstressed position? Assume a coefficient of friction of 0.2.
(a) In a throttling process, energy and exergy are conserved. (b) If unit costs are based on exergy, we expect the unit cost of the electricity generated by a turbine to be greater than the unit cost of the high-pressure steam provided to the turb..
four forces are applied to a W200x35.9 rolled beam as shown. determine the principal stresses and maximum shearing stress at point a.
In many cases, we are concerned with free convection involving gases that are contained within sealed enclo- sures. Consider air at 27°C and pressures of 1, 10, and 100 bars. Determine the gure of meritdescribed in Problem 9.4 for each of these thr..
What is the maximum data rate possible?
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Obtain an expression for the thermal efficiency of a single reversible power cycle operating between hot and cold reservoirs at TH and TC, respectively, in terms of the thermal efficiencies of the two cycles.
air enters the compressor of a regenerative air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar
Question 1. Water is stored either side of a vertical lock gate as shown in Figure Q1 The water level on one side of the wall is 10.0 m, on the other side it is 4.0 m. Determine the net force on the wall, per metre length, and the location of the..
an air turbine is a continuous flow device that produces shaft power by expanding high pressure air. a particular air
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