3. 15/16-inch-wide key has a depth of 5/8 in. It is 12 inches long and is to be used on a 200 hp, 1160 RPM, squirrel cage induction motor. The shaft diameter is 3 7/8 inches. The maximum direct shearing stress on the key, considering the effect of the keyway.

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Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.