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A tunnel of square cross section, 8 m × 8 m, has a weight (above water) of 50 ton per meter length. The tunnel is being floated to its destination, with its two ends closed by temporary sheets. Calculate the draught (the depth of the bottom below water).
a refrigeration system is designed to operate between temperture limits of -10 c and 25 c. the power input to the steam
calculate the rate of heat transfer per unit surface area by radiation between two brick walls a short distance a part
A hollow box beam with height h = 16 in., width b 8 in., and constant wall thickness t 0.75 in. is shown in the figure. The beam is constructed of steel with yield stress σY = 32 ksi.
a cylinder contains 2 kg of steam at 200 kpa and 200 c. the steam is compressed at constant pressure until its
to improve the efficiency of a steam boiler system which generates 600 psia steam for refinery process use the boiler
spherical tanks a and b shown here are connected by a pipe and valve. tank a has a diameter of 2.29 m and tank b a
If m = 5, as is typical of creep at the low temperatures used for stress relieving, σ o = 5000 psi, E = 10 × 106 psi, and C = 6 × 10-22(psi)-5/h at the annealing temperature, how long would it take for the stress to drop to 2500 psi?
air enters a compressor operating at steady state with a pressure of 1 bar a temperature of 20degc and a volumetric
an object of mass 4 kg stretches a spring 0.2m. the object is set in motion with an initial velocity of 1 ms downward
If the voltage at the load is 100 V, find the maximum and minimum voltage on the line.
One side of a mercury manometer is connected to the top of frictionless piston-cylinder storage tank containing 1500 liters of oil, the other side is open to the atmosphere. The difference in the height of the column of mercury in the manometer is 90..
An ideal vapor-compression refrigeration cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at 2 bar, and saturated liquid exits the condenser at 8 bar. The mass flow rate of refrigeran..
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