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43.

The coefficient of friction depends on                        
A. area of contact B. shape of surfaces
C. strength of surfaces D. nature of surface



44.

The forces, which meet at one point, but their lines of action do not lie in a plane, are called                        
A. coplanar non-concurrent forces B. non-coplanar concurrent forces
C. non-coplanar non-concurrent forces D. intersecting forces



45.

The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are                        
A. 2 and V6 B. 3 and 1 kg
C. V5andV5 D. 2 and 5




46.

The possible loading in various members of framed structures are                        
A. compression or tension B. buckling or shear
C. shear or tension D. all of the above



47.

The product of either force of couple with the arm of the couple is called                        
A. resultant couple B. moment of the forces
C. resulting couple D. moment of the couple



48.

The ratio of limiting friction and normal reaction is known as                        
A. coefficient of friction B. angle of friction
C. angle of repose D. sliding friction



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