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Steam enters an adiabatic turbine at 6 MPa, 600°C, and 80 m/s and leaves at 50 kPa, 100°C, and 140 m/s. If the power output of the turbine is 5 MW, determine (a) the reversible power output and (b) the second-law efficiency of the turbine. Assume the surroundings to be at 25°C.
a rectangular intake air duct is 36 in. wide and 24 in. high. it runs for over 300 ft inside a warehouse and is at 50 f
why does necking occur during a tensile test? use your knowledge of engineering stress and strain to explain the
Estimate the mass flow rate of fuel into the engine in kg/h.
a centrifugal pump with backward-curved blades has the following measured performance when tested with water at 20degcq
A ball with a mass of 0.25 kg is thrown vertically upward with an initial velocity of 10 m/s. What is the velocity of the ball when it reaches the highest point?
The roof is supported by cables. If the cables exert FAB = 100N and FAC = 120N on the wall hook at A, determine the magnitude of the resultant force acting at A.
you are handed an apple that has a mass of 102g. to get a better idea of what different pressures feel like you rig up
a heat-engine of 32 thermal efficiency is used to drive a refrigerator having coefficient of performance of 5.
from fundamentals of engineering thermodynamics book 9.85 for the turbojet in problem 9.84 plot the velocity at the
assume that one mole of ar has a volume v 2.5 x 10-3 m3 at 300k. use the van der waals equation to calculate pressure
a heat engine power cycle is operating on a carnot cycle and has a thermal efficiency of 75. the waste heat from this
an adiabatic throttle valve operates in a steady-state steady-flow condition with r-134a refrigerant at a flow rate of
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