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Consider a regenerative cycle utilizing steam as the working fluid. Steam enters the turbine at 3.5 MPa, 400oC and exhausts to the condenser at 10 kPa. Steam is extracted at 0.8 MPa for purposes of heating the feed water in an open type feed water heater. The feed water leaves the heater at the temperature of the condensing steam. The appropriate pumps are used for the water leaving the condenser and the feed water heater. Calculate the cycle thermal efficiency and the net work per kg of steam.
air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17oc. the system
a balanced wheel supported on springs is rotating at 1200 rpm. if a bolt weighing 15 g and located 5 cm from center
we are building a fire proof safety box that can withstand a 700c fire for two hours and not allow the inside of the
an engineer measures the diameter of 20 tubes selected at random from a large shipment. the sample yields a sample mean
Use potential flow theory to determine the lift coefficient of a spinning baseball in terms of the forward velocity (V ) and spin RPM.
the automatic transmission in a car receives 25 kw shaft work and gives out 24 kw to the drive shaft. the balance is
What are the percentages of the total heat absorption taking place in the economizer, boiler drum and the superheater, respectively? Assume cp of air and water as 1.005 kJ/kg K and 4.2 kJ/kg K, respectively.
what is the magnitude of the impulse applied to the projectile by its weight from t 0 s to 3 s? given mass of
a 2.0 cubic meter rigid tank contains a water-vapor mixture at 100 kpa. heat is transfered until the pressure reaches
a circular sheet metal duct carries refrigerated air to a cold storage room for apples. the duct itself is 200 mm in
the compression ratio of an ideal dual cycle is 14. air is at 100 kpa and 300 k at the beginning of the compression
a and b are shooting a movie scene in which a needs to pass a gun to b. stuntman b is supposed to start falling
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