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The pressure in the condenser is 50 kPa. If the cycle is ideal, with exception of the turbine, find the cycle efficiency when the turbine isentropic efficiency is 85%.
A downward force F = 180 N is applied to the bar at a location midway between the two supports. The resulting deflection at the midway location is delta = 4 mm. Estimate the elastic modulus (in GPa)
Estimate the largest possible force (in N) that can be applied before the bar breaks. Assume the maximum flexural strength reported for this material.
Sketch the structures that you would expect to see if you looked at polished sections of the samples under a reflecting light microscope.
For the ideal cycle calculate, neglecting feed pump work, the amount of bleed steam required per kg of supply steam; the thermal efficiency of the plant; the specific steam consumption.
What is the acceleration the girl experiences as she clings to the outer edge (at R) of the handle bars? The initial angular speed of the merry-go-round is (omega_0).
Determine the change in specific entropy of the system (kJ/kg-K), Determine the change of specific entropy of the environment (kJ/kg-K).
Determine the specific work and heat transfer associated with the process (kJ/kg), (b) Determine the change in specific entropy of the system (kJ/kg-K)
If a cylinder is maintained at 70 degrees C (5 cm dia.) and loses heat to the surrounding air (30 degrees C) by natural convection, what's the heat transfer rate per unit length of the cylinder?
Calculate the work output and the heat supplied per kg of steam for the plant, assuming idea processes and neglecting the feed pump term. Calculated also the specific steam consumption and the cycle
If the oil tank is insulated, so there is no heat transfer from the oil to the surroundings, how much new disorder is produced in this process? By how much did the entropies of the oil and the forgi
Calculate the number of cycles until failure for the second stress considering cumulative fatigue. Calculate the cumulative effect by either the Miner or the Manson method, explain your choice.
Stray heat transfer and kinetic and potential energy effects are negligible. Assuming the ideal gas model for the air, determine the maximum theoretical pressure at the exit, in lbf/in.2
Find (a) the final temperature in each container (K), (b) the final mass in each container (kg), and (c) the total change in entropy (kJ/K).
The system is extremely clean and quiet, and the flow stays laminar until a noisy air compressor is turned on in the laboratory. Then it suddenly goes turbulent. Calculate the ratio of turbulent to
Determine the specific work and heat transfer associated with the process (kJ/kg). Determine the change in specific entropy of the system (kJ/kg-K)
If you double the velocity without changing the circulation or the doublet strength, what happens to the size of the cylinder? What happens to the lift?
Calculate the force P required to give the bucket an upward acceleration of .5 m/s^2 from rest if it contains 20 kg of water at that time. the empty bucket has a mass .6 kg.
One kg of steam is contained at 200 degC and 1 MPa in a closed, deformable vessel and is expanded to 50 kPa in a reversible, isothermal process. Find the work done and the heat transfer in this pro
Determine by how much the tank dimensions (tank length and tank diameter) change under the combined action of the pressure and axial force.
A 20-kg steel forging at 350degC is quenched by immersing it in a 250 L tank of oil that is initially at 20degC. How much new disorder is produced in this process? By how much did the entropies of the
If the steam undergoes a reversible adiabatic expansion, until a pressure of 600 kPa is reached, what is the exit velocity of the mass?
If the flow rate out of the tank is 10 liters/minute, determine the time (in seconds) to obtain a density of 1010 kg/m^3. Assume freshwater is 1000 kg/m^3, and seawater is 1030 kg/m^3.
Determine the local acceleration, the convective acceleration, and the total acceleration at point 1 and 2 at t = 0. Total acceleration is between 80-100 m/s^2 at x =0, 150-200 m/s^2 at x =2m.