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At the beginning of the compression process of an air-standard dual cycle with a compression ratio of 18, the temperature is 300 Kelvin and the pressure is 0.1MPa. The pressure ratio for the constant-volume part of the heating process is 1.5:1. The volume ratio for the constant pressure part of the heating process is 1.2:1. Determine:
a.) The thermal efficiency of the cycle.
b.) The mean effective pressure, in MPa.
a piston cylinder device contains 0.25 kg of air initially at 1.8 mpa and 360 degc. the air is first expanded
The roof is supported by cables. If the cables exert FAB = 100N and FAC = 120N on the wall hook at A, determine the magnitude of the resultant force acting at A.
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How do you determine the velocity of molten metal flowing through the base of the downsprue?
The angular acceleration of a shaft is defined by the relation a = -0.25w, where a is expressed in rad/s^2 and w in rad/s. Knowing that at t=0 th angular velocity of the shaft is 20 rad/s, determine the time required for the shaft to come to rest.
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