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A cylindrical pressure vessel of diameter 2 m and wall thickness 20 mm is subjected to an internal pressure of 20 bar (2 MPa). What is the maximum length of longitudinal through crack that can be permitted with a safety factor of 3, if the material has a fracture toughness Kic=50 MPa sqrt(m)?
100 lbm of water at 500 psi occupies 1.6 ft3. it undergoes a constant pressure process until the temperature is 600
you are offered a zero coupon bond worth 10000 in face value 20 years from now. assume that you believe inflation over
a bullet moving at a speed of 1000 fts has its speed reduced to 900 fts when it passes through a board. determine how
a civil engineer must design a wheelchair accessible ramp next to a set of steps leading up to a building. the height
consider a steam turbine operating at steady-state. there is one inlet and one outlet tand adiabatic conditions may be
A refrigerating plant operating between temprature limit of 253k and 307k provides 4.5kJ/s of refrigerating effect. If the refrigerating efficiency of the plant is 0.76. calculate the power required to drive the plant.
water at 24 degree c flows at 0.8 ms in a smooth 1.5 cm i.d. tube that is kept at 27 degree c. the system is extremely
refrigerant 134a at a rate of 0.8 lbs enters a compressor operating at steady state as saturated vapor at 30 psia and
it is known that the velocity distribution for steady laminar flow in circular tubes either horizontal or vertical is
water steam at 3mpa and 400oc is expanded to 100kpa in an adiabatic turbine with an isentropic efficiency of 92.
six kilograms of carbon dioxide in a piston-cylinder device execute a carnot cycle consisting of the following four
a piston cylinder device initially contains 5kg of water at saturated liquid state1. it undergoes a process in which it
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