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141.

In a simple bending theory, one of the assumption is that the material of the beam is isotropic. This assumption means that the

A.	normal stress remains constant in all directions	B.	normal stress varies linearly in the material
C.	elastic constants are same in all the directions	D.	elastic constants varies linearly in the material

142.

In a simple bending of beams, the stress in the beam varies

A.	linearly	B.	parabolically
C.	hyperbolically	D.	elliptically

143.

In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that.

A.	stress is uniform throughout the beam	B.	strain is uniform throughout the beam
C.	stress is proportional to the distance from the neutral axis	D.	strain is proportional to the distance from the neutral axis

144.

When a beam is subjected to a bending moment, the strain in a layer is

A.	equal to	B.	directly proportional to
C.	inversely proportional to	D.	independent of

145.

A section of beam is said to be in pure bending, if it is subjected to

A.	constant bending moment and constant shear force	B.	constant shear force and zero bending moment
C.	constant bending moment and zero shear force	D.	none of the above

146.

When a beam is subjected to bending moment, the stress at any point is

A.	equal to	B.	directly proportional to
C.	inversely proportional to	D.	independent of

147.

The line of intersection of the neutral layer with any normal cross-section of the beam is called neutral axis.

True

False

148.

The neutral axis of the cross-section a beam is that axis at which the bending stress is

A.	zero	B.	minimum
C.	maximum	D.	infinity

149.

The neutral axis of the symmetrical beam does not pass through the centroid of the beam.

Agree

Disagree

150.

The section nodulus (Z) of a beam is given by

A.	I / y	B.	I.y
C.	y / I	D.	M / I