Engineering, 26.07.2019 16:20 dbn4everloved
Which of the following dimensionless numbers govern the transition turbulent flow in an external forced convection analysis? numbers govern the transition from laminar flow to a. biot b. nusselt d. reynolds
Answers: 3
Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
Engineering, 04.07.2019 18:10
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
Answers: 1
Engineering, 04.07.2019 18:10
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
Answers: 3
Which of the following dimensionless numbers govern the transition turbulent flow in an external for...
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