The following represent solutions of the transmission line differential equations for some arbitrary function f(u):
v(z, t) = 60 cos(1000t -5z) - 120 pi f (2t + z/100+12) v
i(z, t) = 2 pi f (2t +z/100 +12) - cos (1000 t -5z) a
a) what is the forward propagating voltage waveform?
b) what is the beckward propagating curent waveform?
c) what is the characteristic impedence of this line?
d) what is thw velocity of propagation for a signal on this line?
e) what is the total voltage at t=0 at the input end of the line (z=0)

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.

Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process