Engineering, 25.11.2019 20:31 jadejordan8888
Oil is confined in a 4-in. diameter cylinder by a piston having a radial clearance of 0.001 in. and a length of 2 in. a steady force of 2250 lbf is applied to the piston. assume the properties of sae 30 oil at 120of. estimate the rate at which oil leaks past the piston. use fig. a.2.
Answers: 1
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Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.
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Engineering, 04.07.2019 19:20
Heat transfer by is the fastest mode of heat transfer that requires no intervening medium. a)-conduction b)-convection c)-radiation d)-conduction and convection
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Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c
Answers: 3
Oil is confined in a 4-in. diameter cylinder by a piston having a radial clearance of 0.001 in. and...
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