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The steel plate shown supports six 2-inch diameter idler rollers mounted on the plate. Two flat belts pass around the rollers, and rollers A and D are adjusted so that the tension in each belt is 10 lb. Determine (a) the resultant couple acting on the plate if a = 8 in., (b) the value of a so that the resultant couple acting on the plate is 480 lb•in. clockwise.
The Brayton cycle shown in figure 6.41 operates using CO2 as a working fluid with compressor and turbine isentropic efficiencies of 1.0. Calculate the thermal efficiency of this cycle when the working fluid is modeled.
How many engagement points on the flywheel would be necessary to make this machine safe? Show your work.
in an ore-mixing operation, a bucket full of ore is suspended from a traveling crane which moves along a stationary bridge. the crane is traveling at a speed of 3m/s when it is brought to a sudden stop. Determine maximum horizontal distance throug..
Prepare a 3-input, 5 bit multiplexer that fits in a 24-pin IC package. Write the truth table and draw a logic diagram and logic symbol for the multiplexer.
Determine the minimum distance from a 50 ft height building from which the ball can be thrown and not hit the side of the building , but it may land on the roof depending upon how long the building is.
The wheel of a crane lift is rolling on a flat rail. The radius of the wheel is 4 in, the contact length and force are 2.5 in and 1 ton respectively, and E = 30 MPa and ν = 0.3 for both parts. Determine (a) the maximum contact pressure, (b) the wi..
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
What is the nozzle-exit-to-throat area ratio for case (a)? The gross thrust is the contribution to engine thrust made by the exhaust nozzle only.
determine the electrical power input to the pump. the density of water is 1kg/l.
Determine maximum total bending moment (static plus dynamic) of the beam under steady-state conditions.
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
The tank has a 180 mm inside diameter and a 12 mm wall thickness. Knowing that the tank contains compressed air under a pressure of 8 MPa, determine the magnitude T of the applied torque for which the maximum normal stress in the tank is 75 MPa.
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