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Line impedance on line with general load. A long lossless transmission line with characteristic impedance 50 Ω is terminated with a load as in Figure 14.48. The line operates in free space (material between the two lines is air) at 1 MHz. Calculate:
(a) The generalized reflection coefficient on the line.
(b) The standing wave ratio on the line.
(c) The location of the first minimum voltage on the line.
(d) The standing wave ratio as a function of frequency.
on the apollo 14 mission to the moon astronaut alan shepard hit a golf ball with a golf club improvised from a tool.
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
a straight roller bearing is subjected to a radial load of 12 kn. the life is to be 4000 h at a speed of 750 revmin.
By performing both an energy balance and an entropy analysis, calculate the change in entropy when 1 mole of saturated ethanol vapor condenses at its normal boiling point.
three grams of air are contained in a piston-cylinder. initially the air temperature and volume are 300k and 2.5 liter.
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
a piston-cylinder device initially contains 0.35-kg of steam at 3.5 mpa superheated by 7.4degc. now the steam loses
Determine the tensions developed in wires , and and the angle required for equilibrium of the 30-lb cylinder E and the 60-lb cylinder F.
a brayton cycle operates with inlet air at 14 psi and 80f. the turbine inlet temperature is 1800 f and the pressure
Select a correct statement of the first law of thermodynamics, and briefly explain why:
one kilogram of water initially at 200 degc and 0.2 mpa undergoes an isothermal internally reversible compression
an instrument to measure the acc. of gravity on mars is made of a spring from which hangs a mass of 0.24 kg. at a place
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