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A steam turbine is operating at a steady state. Inlet pressure and temperature are 40 bar and 400 degrees C, respectively. Exit pressure and quality are 0.1 bar and 0.9, respectively.
A 3 cm thick stainless steel (thermal diffusivity 0.0000044, k=16.3) plate initially at 500°C is suddenly exposed to convective environment at 40°C with h=150 W/ m^2*°C. Calculate the ti
A fluid of viscosity µ is placed between two horizontal circular disks of the same radius R. The disk at z = 0 is stationary and the disk at z = b rotates with angular velocity ?
Steam enters an adiabatic turbine at 400C and 2MPa pressure. The turbine has an isentropic efficiency of 0.9. The exit pressure is so that actual work output from the turbine is wa=700kj/kg.
An adiabatic and reversible steam turbine receives steam at 1 MPa and 300 degrees C. The exit pressure is 100 kPa. Determine the exit state (temperature and quality if saturated)
A room in the lower level of a cruise ship has a 30cm diameter circular window.If the midpoint of the window is 4m below the water surface,determine the hydrostatic force acting on the window and th
Derive an equation to calculate the maximum deflection point on a beam held up by pins, represented by reaction forces, R1 and R2, and a force by the center.
A seesaw is 20 feet long with a fulcrum at the center. Three children want to get on at the same time. The masses of each child are: 50,65, and 75 lb. The two heaviest sit at opposite ends. Where s
A heat engine is operating on a Carnot cycle and has a thermal efficiency of 75 percent. The waste heat from this engine is rejected to a nearby lake at 60°F at a rate of 800 Btu/min.
A machining-center spindle and tool extend 10in. from their machine-tool frame. calculate the temperature change that can be tolerated in order to maintain a tolerance of 0.001in. in machining. ass
Compare theresults of part(a) with those of a resersible power cycle operating between these reserviors and receiving the same rate of heat transfer from the hot reservior.
Neglecting any resistance to the motion of the plateform due to the water, determine the impulse provided to the person/plateform system by the rope when the rope becomes taut.
Determine the thickness of steel plate required for a 2m diameter cylindrical boiler with hemispherical ends if the tensile and shear stresses in the plate are not to exceed 85 Mpa and 40 Mpa.
A component is made of a brittle material that has prperties Sut=30 ksi and Suc= 90ksi. Use MNST, BCMT, MMT to determine if the component is safe for a design factor 1.5 at two points.
Saturated water at 1 atm and velocity 2 m/s flows over a cylindeical heating element of diameter 5 mm. What is the maximum heating rate (W/m) for nucleate boiling?
The steam at the inlet is 20 bar absolute with superheat of 135 C . The steam at the outlet is 1 bar absolute and 100 C. The velocity of the steam at inlet is 3m/s, and 12 m/s at the outlet.
Calculate the factor of safety the designer must have used. The elongation in a 2-in speciman of ASTN No. 40 at failure is approximately 0.5%-1.0%.
Calculate the number of kilograms of hydrogen that pass per hour through a 6.0-mm-thick sheet of palladium having an area of 0.40 m2 at 500°C.
A golfer hits a ball , giving it a maximum height of 20 m . If the ball lands 130 m away at the level from which he hit it, what was its initial velocity?(neglect air resistance)
Oil Enters a counterflow heat exchanger at 450k with a mass flow rate of 10 kg/s and exits at 350k. A seperate stream of liquid water enters at 20 C, 5 bar.
Explore the effects of compressor pressure ratio (2 to 20 in increments) and mixture ratios (Helium and Xenon) between 0% and 90% by mole fraction of Xenon.
Find the amount of thermal energy that must be supplied to the air in the cylinder and the net work done by an individual cylinder-piston heat engine each time the cycle is executed.
A skydiver jumps from a ballon and falls freely for 6 seconds. Her parachute then opens ,decelerating her at a constant rate of 3 seconds to a velocity of 18 ft/s,which she maintains until she lands
What is the amount of recycle gas (in mol) per 100 kg of P if the concentration of water in the gas stream entering the dryer is 5.20%?
If a refrigeration cycle is operating between the same temperatures, 100 degrees C and 25 degrees C, what is the maximum COP theoretically possible?