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A cylindrical chamber has a uniform diameter of 6m and a height of 3m. The circular roof is maintained at 300oC and has an emissivity of 0.9 while the floor has an emissivity of 0.2 and is at temperature 30oC. The curved wall is well-insulated and may be regarded as adiabatic. Heat transfer between the surfaces occurs only by radiation.
10 kg of gaseous oxygen is compressed in a piston-cylinder device from an initial state of .8 m3kg to a final state of
An electric arc considered as a black sphere of 5 mm diameter at a temperature of 5000 Celsius is situated 250 mm away from a metal dosk of 100 mm diameter. The disk is oriented at right angle to the normal to the arc and is open to radiation on both..
calculate the room temperature forging force for a solid cylindrical workpiece made of 5052- o aluminimum that is 3.5in
A multiple disc clutch employs 3 steel and 2 bronze discs having outer diameter 300 mm and inner diameter 200 mm. For a coefficient of friction of 0.22 find the axial pressure and the power transmitted at 750 r.pm if the normal until pressure is 0.13..
What is the diameter that I need if a safety factor of 1.3 is used - Take as load only the bending moment caused by the force into account and use the SN diagram below.
air flows steadily through a compressor at the rate of 1.57 kgmin. the compressor requires 5 kw power input to compress
calculate the largest semicircular surface flaw oriented along the axis of the bores that could withstand a fluid pressure of 50MPa.
a circular fin of uniform cross section with diameter of 10mm and length of 50mm is attached to a wall with surface
a car is climbing the hill of slope theta1 at a constant speed v. if the slope decreases abruptly to theta2 at point a
u.s. energy use was approximately 100 quads quadrillions btu in 2008. about 85 of this energy was supplied by burning
Air enters a steady-flow turbine at 1600 K and exhausts to the atmosphere at 1000 K. The second law efficiency is 85%. What is the turbine inlet pressure?
flow and pressure measurements are used to estimate the friction factor for a pipeline. the length of the pipeline
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