Engineering, 30.03.2020 17:49 icantspeakengles
Blem 1. 60 points Gage blocks must be lapped for flatness and parallelism. Cluster of identical CNC lapping machines are available. Both sides of a block are lapped at a time; the lapping wheels are large enough to cover all gage blocks regardless of their lengths. Calculate the number of CNC lapping machines if we want to maximize the machine time by having only one single operator per cluster. ï‚· Machine availability: 85% (15% time for maintenance) ï‚· Rejection rate: 4% ï‚· Lapping time per block: 20 minutes ï‚· Time to walk between machines: 30 sec ï‚· Loading/unloading time: 90 sec
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
Answers: 2
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Blem 1. 60 points Gage blocks must be lapped for flatness and parallelism. Cluster of identical CNC...
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