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171.

When a rectangular beam is loaded longitudinally, the shear force develops on the top layer.

Agree

Disagree

172.

At the neutral axis of a beam, the shear stress is

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

173.

The maximum shear stress developed in a beam of rectangular section is

A.	equal to	B.	4 / 3 time
C.	1.5 times	D.	twice

174.

The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional area is

A.	2 ? 3	B.	3 ? 4
C.	one	D.	9 ? 8

175.

A beam of triangular section is placed with its base horizontal. The maximum shear stress occurs at

A.	apex of the triangle	B.	mid of the height
C.	centre of gravity of the triangle	D.	base of the triangle

176.

The maximum shear stress of a beam of triangular section occurs above the neutral axis.

Correct

Incorrect

177.

A beam of T-section is subjected to a shear force of F. The maximum shear force will occur at the

A.	top of the section	B.	bottom of the section
C.	neutral axis of the section	D.	junction of web and flange

178.

Which of the following statement is wrong?

A.	In the theory of simple bending, the assumption is that the plane sections before bending remains plane after bending.	B.	In a beam subjected to bending moment, the strain is directly proportional to the distance from te neutral axis.
C.	At the neutral axis of a beam, the bending stress is maximum	D.	The bending stress in a beam is inversely proportional to the section modulus

179.

A flitched beam is used to

A.	change the shape of the beam	B.	effect the saving in material
C.	equalise the strength in tension and compression	D.	increase the cross-section of the beam

180.

A rectangular beam of length l supported at its two ends carries a central point load W. The maximum deflection occurs

A.	at the ends	B.	at l / 3 from both ends
C.	at the centre	D.	none of these