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The tank is allowed to exchange heat with the surroundings to maintain its temperature at all times. What kind of a process is this? What is the pressure remaining in the tank?
What is the work required using the saturated liquid approximation? What is the work required using the compressed liquid tables? What is the work required if you use the mechanical energy equation?
Show the state on a T- v diagram with the vapor dome and a constant pressure line passing through the state. Then determine the requested properties using the steam tables.
A levitation fan has been selected that delivers this pressure at a flowrate of 0.032 m3/s. What is the resulting gap height (in mm)? Assume the density of air is 1.19 kg/m3.
A water pump pumps out 2400kg of water pr min. (A) if water coming out with a velocity of 3m/s, what is power of the pump? (b) how much work is done if the pump runs for 10 hours?
Assume the only thermal interaction is conduction between the masses along the bar. How long does it take for the masses to equilibrate to within 5 degrees celcious of each other?
Determine the power (kW) required to run the compressor. Calculate the power (kW) required for isentropic compression from the same inlet state to the same final pressure in a single stage.
Draw the system with any indicated work and heat transfer and choose a system boundary that only contains the water. If present, make sure you indicate the direction of the work and heat transfer.
What is the frequency of the motion? What is the amplitude? What is the total mechanical energy of the motion?
Find the isentropic and the second law efficiencies for a turbine. It receives steam at 3000 KPa, 500c and has two exit flows, one at 1000 kPa.
Steam enters a urbine at 25 MPa, 550c and exits at 5 MPa, 325c at a flow rate of 70 kg/s. Determine the total power output of the turbine, its isentropic efficiency and the second law efficiency.
If a convection coefficient of 500 W/m2·K is maintained by circulation of the oil, how long does it take for the centerline of a rod to reach a temperature of 50ºC, at which point it is
Determine the final gauge pressure of the helium given the atmospheric of the place is 102.8kpa. Round the answer to one decimal place.
Determine the following: 1. The compressor work (kJ/kg) 2. The turbine work (kJ/kg) 3. The cycle thermal efficiency 4. The cycle thermal efficiency if an ideal re-generator is employed.
What stresses are produced in the bolt and in the tube if the nut is tightened an additional quarter turn past the snug-tight condition?
What is the indentation diagonal length when a load of 0.75 kg produces a Vickers HV of 510? Calculate the Vickers hardness when a 570-g load yields an indentation diagonal length of 0.035 mm.
A cylindrical bar of steel (E = 209 GPa, or 30 ×106 psi, v = 0.30) 9.6 mm (0.3780 in.) in diameter is to be deformed elastically by application of a force along the bar axis.
Draw a block-diagram of a yaw rate damping system. Include the following components: the airframe, the rudder actuator, the control element, and the pilot.
How many gallons of brine must the plant take in per day? The density of fresh water is 1.000 g/cm3. The density of brine is 1.025 g/cm3.
Water at 300 kPa with a quality of 50% has a temperature raised 20oC in a constant pressure process. What is the new quality (if could be defined) and specific volume?
For the following given states find the reguired region (i.e., phase) or property of water. Given: P= 400kPa, v= 0.001084 m^3 / kg, find region and temperature.
The masses will accelerate, in a direction that depends on which is the larger. A) What is this acceleration, in terms of m1 and m2? B) What is the tension in the rope, in terms of m1 and m2?
When this happens, the coefficient of friction between wheels and road is .5 N/kg. How long does it take the vehicle to come to a stop, and how far is this?
Determine the total time for the sled to reach the bottom? how long would it take to reach the bottom if the slider gave it a 30 ft/sec sendoff?