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13.

A beam of uniform strength has at every cross-section same                        
A. bending moment B. bending stress
C. deflection D. stiffness



14.

A cantilever beam AB of length 1 carries a concentrated load W at its midspan C. If the free end B is supported on a rigid prop, then there is a point of contraflexure                        
A. between A and C B. between C and B
C. one between A and C and other between C and B D. nowhere in the beam



15.

A cantilever beam AB of length 1 carries a concentrated load W at its midspan C. If the free end B is supported on a rigid prop, then there is a point of contraflexure                        
A. between A and C B. between C and B
C. one between A and C and other between C and B D. nowhere in the beam




16.

A flat carrying a pull of 69C kN is con-nected to a gusset plate using rivets. If the pulls required to shear the rivet, to crush the rivet and to tear the plate per pitch length are 68.5 kN, 46 kN and 69 kN respectively, then the number of rivets required is                        
A. 10 B. 12
C. 15 D. 20



17.

A laminated spring is given an initial curvature because                        
A. it is more economical B. it gives uniform strength
C. spring becomes flat when it is subjec-ted to design load D. none of the above



18.

A laminated spring is supported at                        
A. ends and loaded at centre B. centre and loaded at ends
C. ends and loaded anywhere D. centre and loaded anywhere



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