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A power plant is connected to a supply of 150 psia steam at 500 degrees F. The load is constant and requires throttling to 100 psia between points 1 and 2 in order to hold the load. The turbine exhausts to 2 psia. In order to conserve energy, it is desired to bleed off a fraction of the steam at point 3 (which is at 30 psia) for feed water heating so that the throttle can be fully open without changing the load. The isentropic efficiency in both turbine stages is 86%. What is the maximum percentage of steam that can be bled without reducing the work output? What is the maximum temperature to which returned water at 60 psia and 60 degrees F can be heated?
helium gas expands from 125 kpa 350k and 0.25m3 to 100 kpa in a polytropic process with n 1.667 or 53. is the work
the motion of the slender 10kg rod AB is guided by collars of negligible mass that slide freely on the vertical and horizontal rods. knowing that the bar is released from rest when θ=30, determine the velocity of the collars A and B when θ = 60.
An engineer insists that a component is fully constrained with 0 DOF because 2 plates are bolted together with 4 screws (assuming one of the 2 plates is considered "grounded"). Is he / she correct? Explain why or why not using concepts discuss..
1. a face-milling operation is performed to finish the top surface of a steel rectangular 5 workpiece 12.0 in long by
an air-standard diesel cycle operates with a compression ratio of 18. at the beginning of the compression process the
a system executes a power cycle while receiving 800 kj by heat transfer at a tem-perature of 1600 k and discharging 120
a basketball of mass 0.570 kg is dropped from rest from a height of 1.25 m. it rebounds to a height of 0.734 m. a how
a more desirable color is 39 pigment a 27 pigment b 25.2 pigment c and 8.8 pigment d. using gauss-seidel method
steam enters a well insulated nozzle operating at steady state at 1000?f and 500lbfin2 and velocity 10fts. at the
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
a simple ideal rankine cycle with water as the working fluid operates between the pressure limits of 3 mpa in the
an axhaust stack thermocouple is inserted into a 20 cm long well made of 5mm-o.d. 0.7 mm-wall-thicknes aisi 316
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