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
(D) none of the above
Which of the following is not a scalar quantity__________________?
(A) time
(B) mass
(C) volume
(D) density
(D) acceleration
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
(D) none of the above
Two non-collinear parallel equal forces acting in opposite direction________________?
(A) balance each other
(B) constitute a moment
(C) constitute a couple
(D) constitute a moment of couple
(D) constitute a resultant couple
According to law of triangle of forces______________?
(A) three forces acting at a point will be in equilibrium
(B) three forces acting at a point can be represented by a triangle, each side being proportional to force
(C) if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
(D) if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
(D) none of the above
According to principle of moments_________________?
(A) if a system of coplanar forces is in equilibrium, then their algebraic sum is zero
(B) if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero
(C) the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point
(D) positive and negative couples can be balanced
(D) none of the above
The degree of indeterminacy of the frame in the given figure, is______________?
(A) Zero
(B) 1
(C) 2
(D) 3
The force in BC of the truss shown in the given figure, is___________________?
(A) 3.0 t compression
(B) 3.0 t tension
(C) t tension
(D) t compression
constant, depth of a cantilever of length of uniform strength loaded with Keeping breadth uniformly distributed load varies from zero at the free end and________________?
(A) 2w w l at the fixed end
(B) l) at the fixed end
(C) w l) at the fixed end
(D) 3w l at the fixed end
A cantilever of length is subjected to a bending moment at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is_________________?
(A) ML/EI
(B) ML/2EI
(C) ML²/2EI
(D) ML²/3EI