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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.
two air flows are combined to a single flow. flow one is 1 m3s at 293 k and the other is 2 m3s at 473k both at 1 bar.
a hydro-electric plant uses an 85 efficient turbine-generator to produce power from a reservoir with a height of 45 m
the distance required to stop an automobile consists of both thinking and braking components each of which is a
an inward radial flow turbine is to develop 400 hp when supplied with air at 800c and 3 bar abs the exhaust total
A Heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 40,000 Btu/h.The coefficient of performance of the cycle is 2.8. Determine the power input to the cycle, in hp.
a hot air ballon is traveling upward at a velocity of 10.94 fts and at a horizontal velocity of 18.23 fts. if sand bag
an engineer is designing a hydraulic lift with a capacity of 10 tons. the moving parts of this lift weigh 1000lbf. the
A block is made of a material with a specific gravity of 1.3. If the block has a volume of 0.52 m3, what is the mass of the block?
electric space heaters for home use commonly utilize a ceramic filament as the heating element. list the mechanical
Calculate the normal forces associated with the front and rear wheel pairs of the 1600-kg front- wheel-drive van. Then repeat the calculations when the van
a hydroelectric power station requires water to be pumped from its feeder dam to a secondary dam using two pumps each
Problem: Given a strip footing as shown in the figure. The footing is part of a building that is being renovated. The building load of 50 kips is shown on the figure. Construction required some staging to be attached to the foundation in order to ..
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