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An 1800-rpm motor drives a camshaft 360 rpm by means of a belt drive. During each revolution of the cam, a follower rises and falls 20 mm. During each follower upstroke, the follower resists a constant force of 500 N. During the down strokes, the force is negligible. The inertia of the rotating parts (including a small flywheel) provides adequate speed uniformity. Neglecting friction, what motor power is required? You should be able to get the answer in three ways: by evaluating power at the
(a) motor shaft,
(b) camshaft, and
(c) follower.
Define: What is automated manufacturing? When did automated manufacturing begin?
A piston-cylinder device contains helium gas initially at 145 kPa, 20 degrees C, and 0.5 m^3. The helium is now compressed in a polytropic process (PV^n = constant) to 390 kPa and 140 degrees C. Determine the heat loss or gain during this process.
A Rankine cycle power plant is being developed to operate an irrigation system. In this power plant solar energy will be used to boil a low boiling point fluid within glazed flat plate solar collectors. The working fluid that has been selected is the..
A company is using a carrier to deliver goods to a major customer. The annual demand is $2,000,000, and the average transit time is 10 days. Another carrier promises to deliver in 7 days. What is the reduction in transit inventory?
Two collars C and D move along the vertical rod as shown. Knowing that the velocity of collar C is 50 in/s downward, find the instant centers of all three bars, the angular velocity of AB, the velocity of collard D.
you are blanking a square using a straight edge punch. if the punch is angled to be at a shear angle of 10 degrees how
A 20-cm-diameter 4-m-long horizontal cylinder is released from rest under water. If it weighs 1500 N in air, what is its initial acceleration under water if the added mass is neglected? If the added mass is included?
Three aluminium cylindrical pressure vessels thicknesses 14 mm and radius 840 mm. They are periodically filled and emptied to an interal pressure of 2MPa. Cracks can grow through the wall driven by cycle of stress on pressurisation.
imagine you have three paper cups. cup 1 is covered with a tissue paper cup 2 with a plain sheet of paper and cup 3
the national football league is holding superbowl 45 in the dallas cowboy stadium. one concern is the possibility of
Calculate the actual power transmitted to the second pulley and calculate the power which canb itted if the maximum tension in the belt is limited to half of the ultimate strength of the belt.
a random sample of 12 shearing pins is taken in a study of the rockwell hardness of the pin head. measurements on the
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