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51.

The approximate value of allowable stress for carbon steel under static loading (in kg/cm2) is:

A.	500 - 1000	B.	4000 - 7500
C.	10,000 - 15,000	D.	15,000 - 20,000
E.	20,000 - 25,000

52.

Rupture stress is

A.	Proof stress	B.	Breaking stress
C.	Highest value of stress	D.	Stress given by dividing the load at the moment of incipient fracture, by the area supporting that load
E.	Stress at breaking point

53.

If two unequal rolling loads of unequal weight roll along a beam, the maximum bending moment will occur

A.	Under heavy load	B.	Under light load when centre of the beam bisects the distance between the resultant of the loads and light wheel
C.	Under heavy load when the centre of the beam oisects the distance between the resultant of the loads and ligh wheel	D.	Under heavy load when the centre of the load is at the centre of beam
E.	Under heavy load when the centre of the lighy load is at the centre of the beam.

54.

A continuous beam is

A.	One which is constrained at both ends	B.	One resting upon several supports
C.	One which is part of a system consisting of a number of beams	D.	One which is very long as compared to width of beam
E.	None of the above

55.

In a compression test the fracture in cast iron specimen would occur along

A.	An oblique plane	B.	Along the axis of load
C.	A light angles to the specimen axis	D.	Fracture will not occur in cast iron
E.	None of the above

56.

The amount of resilience is equal to

A.	The work required to deform the body zero stress to stress within elastic limit	B.	Elastic energy stored in unit area of material
C.	Equal to the area of the stress deformation diagram	D.	None of the above

57.

A beam of uniform strength is one in which

A.	The cross-section is same throughout	B.	The bending moment is same at every section
C.	The stiffness is same at every section	D.	The bending stress is same at every section
E.	The load on fibres is same at every section

58.

If a rectangular shaft is subjected to torsion, the maximum sher stress will occur

A.	Along the diagonal	B.	At the comers
C.	At the centre	D.	At the middle of the small side
E.	At the middle of the longer side

59.

A beam simply supported at ends is subjected to load. The point of contraflexure is located where

A.	Shear force is zero	B.	Shear force is maximum
C.	Bending moment is zero	D.	Axial thrust is zero

60.

In the simple bending theory one of the assumptions usually made is that the plane sections before bending remain plane after bending. This assumption implies that

A.	Stress is uniform in the beam cross-section	B.	Stress is uniform in the beam cross section
C.	Stress is proportional to the distance from the neutral axis	D.	Strain is proportional to the distance from the neutral axis
E.	Stress is proportional to strain at all section