Engineering, 25.03.2021 19:50 selena5713
A steam power cycle can be characterized by the pressures between which it operates. The turbineprovides the work out with a high pressure inlet and low pressure outlet. The pump does the opposite, namely increase the pressure from a low value to a high value. For a power plant operating between 7MPa and 15 kPa, determine the ratio of the work delivered by the turbine to the work consumed by thepump. Assume the cycle is completely reversible and that heat losses are negligible.
Answers: 1
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
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Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Engineering, 04.07.2019 18:20
Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
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Engineering, 04.07.2019 19:10
What are the major differences between injection molding and extrusion?
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A steam power cycle can be characterized by the pressures between which it operates. The turbineprov...
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