Engineering, 19.05.2020 20:05 ladnerhailey16
Consider a one-inlet, one-exit control volume operating at steady state. Air enters at 200 lb/in2 , 1040◦R and expands adiabatically to 50 lb/in2 . You may assume that the air acts as an ideal gas and that changes in kinetic and potential energy effects are negligible. Determine the rate of entropy production, in Btu/8R per 1b of air flowing in following cases.
Consider the following two different cases.
a. In the first case, the control volume only encloses a turbine with an isentropic efficiency of 75%.
b. In the second case, the control volume only encloses a throttling valve.
Answers: 2
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Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
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Engineering, 04.07.2019 18:10, nandalabella06
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
Engineering, 04.07.2019 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
Engineering, 04.07.2019 18:20, samueltaye
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
Consider a one-inlet, one-exit control volume operating at steady state. Air enters at 200 lb/in2 ,...
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