Engineering, 07.08.2019 02:20 Rayzamartinez2757
Consider an opaque horizontal plate that is well insulated on its back side. the irradiation on the plate is 2500 w/m2, of which 500 w/m2 is reflected. the plate is at 227 c and has an emissive power of 1200 w/m2. air at 127 c flows over the plate with a heat transfer convection coefficient of 15 w/m2 k. determine the emissivity, absorptivity, and radiosity of the plate. what is the net heat transfer rate per unit area?
Answers: 2
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
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Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
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Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
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Engineering, 04.07.2019 18:10
Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation
Answers: 1
Consider an opaque horizontal plate that is well insulated on its back side. the irradiation on the...
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