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The throttle-control lever OA rotates in the range 0 <>() <>90°. An internal torsional return spring exerts a restoring moment about O given by M = K(() + 1r /4), where K = 500 N · mm /rad and () is in radians. Determine and plot as a function of () the tension T required to make the net moment about O zero. Use the two values d = 60 mm and d = 160 mm and comment on the relative design merits. The effects of the radius of the pulley at B are negligible.
A power cycle has a thermal efficiency of 40% and generates electricity at a rate of 100 MW. The electricity is valued at $0.08 per kW h. Based on the cost of fuel, the cost to supply Qin is $4.50 per GJ.
An important fluid property is the kinematic viscosity which determines the viscous, or frictional, forces acting in a flow. The kinematic viscosity of air multiplied by 10^6 is given at 350, 450, 500, 550, and 650 K as 20.92,32.39, 38.79, 45.57, and..
Both Diamond and Graphite are made from carbon. However diamond is considered the hardest material while graphite is brittle and slippery. Explain this difference from atomic bonding view point
steam flowing in a supply line at 2000 kpa is throttled through a valve to 100 kpa and 120 deg c. determine the
a ball is thrown vertically up with a velocity of 91 ftsec at the edge of a 190-ft cliff. calculate a the height h to
refrigerant 134a undergoes a process for which the pressure-volume relation is pvn constant. the initial and final
the base surface of a cubical furnace 3-m x 3-m x 3-m is surrounded by black surfaces at a 1200 k. specified
a type e thermocouple is placed in an oven and connected to a dmm. the temperature surrounding the dmm is 30 degrees
christian huygens 1629-1695 the greatest clockmaker in history suggested that an international unit of length could be
a continuous beam abc is fully restrained at point a and restrained at point c in all senses except that it may move in
A centrifual pump is used to raise water against a static head of 18 m. The suction and delivery pipes, both .15m in diameter, have respectively, friction head losses amounting to 2.25 and 7.5 times dynamic head. The impeller, which rotates at 1450 r..
The permeability in the reservoir is a constant 200 mD. The pressure in the reservoir is 3000 psi. The reservoir is 100 m thick. A 6-inch well is drilled through the reservoir, which has two effects. First, the rock within 5 ft of the well is damaged..
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