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1.

A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to                        
A. W B. W sin (a + $)
C. Wtan(a + <|)) D. W\an(a-)



2.

A force is completely defined when we specify                        
A. magnitude B. direction
C. point of application D. all of the above



3.

A framed structure is perfect if it contains members equal to……. ;where n = number of joints in a frame                        
A. 2n-3 B. n-l
C. '2n-l D. n - 2




4.

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve                        
A. catenary B. parabola
C. hyperbola D. elliptical



5.

A number of forces acting at a point will be in equilibrium if                        
A. their total sum is zero B. two resolved parts in two directions at right angles are equal
C. sum of resolved parts in any two per-pendicular directions are both zero D. all of them are inclined equally



6.

A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of                        
A. r/2 B. r/A
C. r/% D. 0.134 r



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