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A solid circular drive shaft 2 m long transmits 560 kW of power from the turbine engine of a 25 kN helicopter to its rotor at 900 rpm. If the shaft is steel with a shear modulus G=80 GPa and allowable shear stress = 60 MPa, and if the allowable angle of twist of the shaft is .03 rad, determine the minimum possible DIAMETER of the drive shaft. Assume the axial force on the shaft is equal to the weight of the helicopter. Find the principle stresses on an element on the surface of the shaft. Show the principle stresses on correctly oriented elements
a refrigerator uses a compressor that employs r-134a as the refrigerant. determine the power requirement w and
Define dynamic viscosity, Determine the centroid, Pressure due to the height of liquid, Advantage of changing the liquid, Calculate the total moment about the hinge of the seal gate.
a particulate monitor has a power supply consisting of two batteries in parallel. either battery is adequate to
hot air at a temperature of 60c is flowing through a steel pipe of 10 cm diameter. the pipe is covered with two layers
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
an ideal brayton cycle has reheat between the first and second staged turbines and regeneration following the second
a man having the mass of 73 kg sits in the chair which is pin-connected to the frame bc. if the man is always seated in
Evaluate the maximum theoretical power that can be developed by the turbine, in kW, and the corresponding exit temperature.
optimus prime is flying straight up at 67 ms when he accidentally drops his mega-ray blaster and it falls 76 m to the
a heat engine is composed of of a monatomic ideal gas which runs in the following cycle at point a the pressure is 2.6
a stone is thrown vertically upward from a bridge located 40 m above the water. knowing that it strikes the water 4 s
an engineering student measures an ambient lab pressure and temperature of 405.35 in. h2o and 70.5 f respectively and
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