Civil Engineering Objective Questions { Strength Of Materials }

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141. In a fixed beam, the points of contraflexure,

A. for a uniformly distributed load are 2

B. for a concentrated load are 2

C. for a moment applied at mid point are 3

D. all the above.

142. Maximum deflection of a

A. Cantilever beam carrying a concentrated load W at its free end is we 3E1

B. simply supported beam carrying a concentrated load WWL3 at mid-span is 48 E

C. cantilever beam, carrying a uniformly distributed load over span is we 8E1

D. All the above.

143. The maximum deflection of

A. a simply supported beam carrying a uniformly increasing load from either end and having the apex at the mid. WL3 span is 60 El

B. a fixed ended beam carrying a distributed load over the WL3 span is 192 El

C. (d) a cantilever beam subjected to a moment M at the free end is WL3 3 El

D. All the above.

144. For structural analysis, Maxwell's reciprocal theorem can be applied to :

A. plastic structures

B. elastic structures

C. symmetrical structures

D. all the above.

145. For structural analysis of forces, the method refers to

A. moment-area-theorem

B. three-moment equation Maxwell's reciprocal theorem

C. a fixed ended beam carrying a concentrated load at the

D. none of these.

146. Influence lines are drawn for structures

B. statically determinate

C. (b) pin-jointed truss

D. none of these.

147. The tensile force required to cause an elongation of 0.045 mm in a steel rod of 1000 mm length and 12 mm diameter, where E = 2 x 106 kg/cm2.is

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