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Air enters a compressor operating at steady state with a volumetric flow rate of 8 m3/min at 23°C and 0.12 MPa. The air is compressed isothermally without internal irreversibilities, exiting at 1.5 MPa. Kinetic and potential energy effects can be ignored. Evaluate the work required and the heat transfer, each in kW.
liquid water at a pressure of 1 bar is pumped to a pressure of 100 bar. during the process the temperature of the water
a hollow steel shaft 6 ft long has an outer diameter of 2.5 in. and an inner diameter of 1.5 in. the shaft is
a system that operates in a reversible cycle receives energy by heat transfer from a 24.8oc reservoir at a rate of 25.5
the figure below shows the geometrical stress concentration factor k for a flat bar loaded in uniaxial tension. the
Assume they test null hypothesis H0: versus H1: Will the engineers decide to use the steel if H0 is rejected? Will the engineers decide to use the steel if H0 is not rejected?
A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
q1.a single stage reciprocating compressor has a swept volume of 0.4 litres and operates at 1440 rpm through a pressure
235u is bombarded with 0.025 ev neutrons. the result of the fissioning of the 235u are 4 neutrons ke 1 mev per neutron
in order to accommodate a bearing on an 80mm diameter shaft it is suggested that it be reduced in diameter to 65 mm
to save energy stack gas from a furnace is used to dry rice. a gas containing 4.73 mol water is fed into the dryer as
question 1 give examples from your own experience of situations where friction is a desirable and b
the atmosphere on maris is comprised of mostly carbon dioxide at a pressure of 600 pa that is not a mistake it is in
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