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A motor delivers 50 lb-ft torque at 2000 rpm to an attached gear reducer. The reducer and motor housings are connected together by six bolts located on a 12-in.-dia. circle, centered about the shaft. The reducer has a 4:1 ratio. Neglecting friction and weight, what average shearing force is carried by each bolt?
r-134a is contained in a vertical cylinder fitted with a frictionless piston and a set of stops and the volume is
Find the enthalpy of the steam discharged into the condenser and the thermal efficiency of the cycle.
A container filled with 73 kg of liquid water at 99ºC is placed in a 60-m3 room that is initially at 12ºC and 1 atm. Thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room. Using consta..
refrigerant r134a flows steadily at a mass flow rate of 2 kgs through a well-insulated nozzle with a circular
An air-standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes: Isentropic compression from 100 kPa and 27 degrees C to 1.11 MPa. P = constant heat addition in amount of 3,020 kJ/kg
a vertical post consists of a steel pipe of 80 mm diameter and 6 mm wall thickness fixed at the bottom and free at the
Properties of air just upstream of a normal shock are velocity 680 m/s, static pressure 80 kPa, and static temperature 333K. Determine the velocity, static properties, and stagnation properties of the gas downstream of the shock. What is the increase..
What is the total change in velocity required to go from a 200 km altitude circular, Earth orbit to circular orbit with a radius of 384,000 km (the mean radius of moons orbit relative to the earth, but ignore the moons presence}?
liquid chromatography lc flow can be model as a packed bed and is described by the ergun equation. lc systems are often
Develop the equivalent rotational model of the system with the applied torque T as the input variable and the angular displacement theta as the output variable. Neglect any twist in the shaft.
Draw graphs of f (t) and of the periodic functions represented by each of the three series for -4 t 4
Three samples of aluminium are subjected to a constant stress and the times required to produce a constant strain of 0.1% during steady state creep at different temperatures are shown in table 1 below.-The temperature at which a strain of 0.1% is p..
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