Anti-Friction and Journal Bearing
Explain difference between the Anti-Friction Bearing and the Journal Bearing?
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Usually, journal bearings have the higher friction force, consume more energy and liberate more heat, but they do have the larger contact surface, thus normally it is used in the low speed high load applications. In the anti friction bearings, the friction is less. One object rolls over one another.
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Water flows at 40 m/s from the jet of area of cross-section of 0.008 m2 on to a flat plate as shown in the figure. Determine the force F normal to the plate, and also the flow rates out of the plate. Q : Define spinning jenny Spinning jenny: Spinning jenny: It is a multi-spool spinning wheel. It was invented in the year 1764 by James Hargreaves in Stanhill, close to Blackburn, Lancashire in the north west of England (though Thomas Highs is another candidate recognized as inventor).
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