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1. An actuating lever in an electrical device must open and close almost instantly and carry a high current when closed. What design requirements would be important for this application? Design a material and its processing to meet these requirements.
2. A fan blade in a chemical plant must operate at temperatures as high as 400C under rather corrosive conditions. Occasionally, solid material is ingested and impacts the fan. What design requirements would be important? Design a material and its processing for this application.
Shop order 7777 is for 600 of part 8900. From the routing file, it is found that operation 20 is done on work center 300. The setup time is 3.5 hours, and run time is 0.233 hours per piece. What is the required capacity on work center 300 for shop..
A rigid tank contains 10 kg of air at 345 kPa and 27 Celsius. The air is now heated until its pressure doubles. What is the volume of the tank? What is the amount of heat transfer?
Determine the flow angles at the hub, mean, and tip radii of both inlet and outlet of the rotor. Also calculate the degrees of reaction at both hub and tip.
A titanium alloy with a modulus of elasticity of 16 × 106 psi is used to make a 1000-lb part for a manned space vehicle.
a water cooled spherical object of diameter 10 mm and emissivity 0.9 is maintained at 4000c. what is the net transfer
nitrogen n2 initially occupying 0.1 m3 at 6 bar 2478c undergoes an internally reversible expansion during which pv 1.20
a water stream is heated in fully developed flow through a pipe with uniform heat flux at the wall. the flow rate is
When the governor is connected to a engine its sensitiveness formula change, why?
methane at 6 mpa and 245 k is heated at a constant pressure until its volume has increased by 90 percent. determine the
Refrigerant 22 enters the valve of a refrigeration system with a pressure of 14 bars and a temperature of 32 C and exits at a pressure of 4 bars. Neglecting heat transfer and any changes in potential and kinetic energy, determine the quality of the r..
a 50kg lid is placed on a 20cm diameter container to form a crude pressure vessel. the initial pressure is 1 atm and
1-2 an actual refrigerator absorbs 500 kj of heat from a sink at 250 k and reject 660 kj of heat to environment at 300
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