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71.

The assumptions generally made in the theory of pure bending is

A.	The value of the Young's modulus is the same for the beam material in tension as well as in compression	B.	The elastic limit is well exceeded
C.	The material of the beam is non-homogeneous	D.	The transverse section of the beam suffers permanent distortion
E.	The beam is rectangular in section

72.

Two beams carrying uniformly distributed load have same depth but beams A has width 2nd as compared to width w for beam B. The ratio of elastic strength of beam A compred to that of B will be

A.	1	B.	2
C.	4

73.

Two beams carrying identical loads simply supported are having same width but beam A has double the depth as compared to that of beam B. The ratio of elastic strength of neam A compared to that of B will be

A.	2	B.	4
C.	8
E.	?

74.

The stress at neutral axis is

A.	Zero	B.	Maximum tensile
C.	Minimum compressive	D.	Minimum tensile
E.	Maximum compressive

75.

The relation between the bending moment and the moment of resistance e.g. M=fZ applies

A.	Only to beams of circular cross-section	B.	Only to beams of rectangular cross-section
C.	When the beams are strained beyond the elastic limit	D.	When the beams are not strained beyond the elastic limit
E.	None of the above

76.

For a beam of length L fixed at one end, supported at the other and loaded W at the centre C the maximum bending moment with occur at

A.	Fixed end	B.	Centre
C.	Simply supported end	D.	Between fixed end and centre
E.	Between supported end and centre

77.

For beam of length L fixed at two ends A and B and loaded W at the centre C the maximum bending moment will

A.	Occur at A	B.	Occur at B
C.	Occur at C	D.	(A) and (B) above
E.	(A) (B) and (C) above

78.

The neutral axis of beam

A.	Is subjected to maximum stress	B.	Is subjected to maximum shear force
C.	Has tensile stress on one side and compressive stress on the other	D.	Is in the same plane in which the beam bends
E.	None of the above

79.

The neutral axis of a transverse section of a beam passes through the centre of gravity of the section and is

A.	At right angles to the plane in which the beam bends	B.	In the same plane in which beam bends
C.	In the vertical plane	D.	In the horizontal plane
E.	None of the above

80.

For a beam of length L fixed at end A and simply supported at end B and loaded uniformly by a load W the maximum bending moment will occur at

A.	A	B.	B
C.	Centre C	D.	Between AC
E.	Between CD