Engineering, 22.07.2021 15:20 joel4676
lượng hơi nước có lưu lượng 100kg/s ở áp suất p1=20bar nhiệt độ đầu t1=400. giãn nở đoạn nhiệt trong tuabin đến độ khô x2=0.95. Xác đinh áp suất cuối, thể tích cuối và công kĩ thuật của quá trình
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The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false
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Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
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Engineering, 04.07.2019 18:10
What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information
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Engineering, 04.07.2019 18:20
Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.
Answers: 1
lượng hơi nước có lưu lượng 100kg/s ở áp suất p1=20bar nhiệt độ đầu t1=400. giãn nở đoạn nhiệt trong...
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