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301.

The amount of energy required upto fracture is known as

A.	Damping effect	B.	Toughness
C.	Creep strength	D.	Fatigue strength

302.

A material is generally classified as brittle if the percentage elongation (in a gauge length of 50 mm) is less than

A.	1%	B.	2%
C.	5%	D.	15%

303.

Fatigue strength of a surface may be increased by

A.	Making surface rough	B.	Filling the surface
C.	Applying concentrated hydrochloric acid on the surface	D.	Applying birine on the surface and then washing with cold water
E.	Polishing the surface

304.

Which is the lightest?

305.

How many revolutions per minute one radian per second is equal to

306.

The frictional horse power loss in a bearing having 25 mm diameter subjected to a load of 200 kg rotating at 600 rpm will be of the order of

307.

In a stone jaw crusher the main crank bearings are

308.

In which component a ball or roller bearing cannot be used?

A.	Small end of connecting rod	B.	Big end of connecting rod
C.	Carankshaft main bearings	D.	Water circulating pump
E.	Wheel bearing in automobiles

309.

When properly made, a butt weld has the strength equal to

A.	Half the compressive strength of plates	B.	Half the tensile strength of plates
C.	Double the tensile strength of plates	D.	Double the compressive strength of plates
E.	The strength of the welded plates

310.

For a parallel load on a fillet weld of equal leg the plane of maximum shear occurs