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43.

The safe twisting moment for a compound shaft is equal to the

A.	maximum calculated value	B.	minimum calculated value
C.	mean value	D.	extreme value

44.

The strain energy stored in a body due to suddenly applied load compared to when it is applied gradually is

A.	same	B.	twice
C.	four times	D.	eight times

45.

The stress developed in a material at breaking point in extension is called

A.	breaking stress	B.	fracture stress
C.	yield point stress	D.	ultimate tensile stress

46.

The stress induced in a body due to suddenly applied load compared to when it is applied gradually is

A.	same	B.	half
C.	two times	D.	four times

47.

The stress necessary to initiate yielding is

A.	considerably greater than that necessary to continue it	B.	considerably lesser than that necessary to continue it
C.	greater than that necessary to stop it	D.	lesser than that necessary to stop it

48.

The torsional rigidity of a shaft is expressed by the

A.	maximum torque it can transmit	B.	number of cycles it undergoes before failure
C.	elastic limit upto which it resists torsion, shear and bending stresses	D.	torque required to produce a twist of one radian per unit length of shaft

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