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Consider a steam power plant that operates between the pressure limits of 5 MPa and 10 kPa. Steam enters the pump as saturated liquid and leaves the turbine as saturated vapor. Determine the ratio of the work delivered by the turbine to the work consumed by the pump. Assume the entire cycle to be reversible and the heat losses from the pump and the turbine to be negligible.
an automobile radiator may be viewed as a cross-flow heat exchanger with both fluids unmixed. water with a flow rate of
the 50-lb package starts from rest slides down the smooth ramp and is stopped by the spring. the coefficient of static
block a is released from rest and slides down the frictionless ramp to the loop. the maximum height h of the loop is
the lower end of the 30 kg slender rod is displaced a small amount and released from the rest. determine the natural frequency of vibration. the springs have stiffness of 500 N/m and they are stretched when the rod is hanging vertically.
consider an nhl regulation hockey puck 3 inches in diameter and 1 inch thick 7.62 cm by 2.54 cm. determine the surface
a subway train with cars a b and c is traveling at 66fts when the brakes are applied on cars a and b causing them to
Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
1. a natural gas engine has a bsfc of 9000 btushp-hour when producing 200 horsepower. how many btus per hour does the
a group of students is developing a plan to deliver water from a lake to a downhill village. the students plan to use a
distillation of multicomponent alcohol mixture. a feed of 30 mol methanol a 20 ethanol b 15 n-propanol c and 35
a heat exchanger brings 9 kgs water from 250 c to 600 c at 2000 kpa using air coming in at 1300 k and leaving at 450k.
an aluminum rod is made in the form of a hollow square tube 2.25 in outside with a wall thickness of .120 in. its
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