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VARIOUS MOMENTS OF A FORCE ARE- 1. BENDING MOMENT 2.TORSIONAL/TWISTING MOMENT What is moment of a force? Moment of a force is the  measure of tendency of body to rotates about some axis or point . The line of action of force should not pass through the centroid of the body or cancel each other . it can be calculated as the product of force and perpendicular distance from the line of action of force and the point. M= f x d Bending Moment  Turning effect of a force which tends to bend the member acts perpendicular to the axis of the body . Due to the resultant force it tends to bend . Torsional/ Twisting Moment It is the resultant of force produces twisting of the body resulting from shear stress of the body .

hibernate it means while starting it is retaining the same state where it was , upon doing so it saves its content from ROM to other non volatile storage like Hard disk , RAM etc.

Relief valve It opens gradually and then closes. Safety valve It opens fully at the set pressure . Relief valve It takes more time to release the gases bcz it gradually opens .hence less reliable wrt safety. Eg. boiler has safety valve not the relief valve. Safety valve It takes less time to release the gases .