Question: The possible loading in various members of framed structures are_______________?

• 1. compression or tension
• 2. buckling or shear
• 3. shear or tension
• 4. all of the above

Question: The center of gravity of a triangle lies at the point of__________________?

• 1. concurrence of the medians
• 2. intersection of its altitudes
• 3. intersection of bisector of angles
• 4. intersection of diagonals

Question: The units of moment of inertia of an area are_______________?

• 1. kg m2
• 2. m4
• 3. kg/m2
• 4. m3

Question: The center of gravity of a uniform lamina lies at_______________?

• 1. the center of heavy portion
• 2. the bottom surface
• 3. the mid point of its axis
• 4. all of the above

Question: The product of either force of couple with the arm of the couple is called________________?

• 1. resultant couple
• 2. moment of the forces
• 3. resulting couple
• 4. moment of the couple

Question: Two coplanar couples having equal and op-posite moments_________________?

• 1. balance each other
• 2. produce a couple and an unbalanced force
• 3. are equivalent
• 4. can not balance each other

Question: A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if______________?

• 1. the floor is smooth, the wall is rough
• 2. the floor is rough, the wall is smooth
• 3. the floor and wall both are smooth surfaces
• 4. the floor and wall both are rough sur-faces

Question: If a rigid body is in equilibrium under the action of three forces, then_______________?

• 1. these forces are equal
• 2. the lines of action of these forces meet in a point
• 3. the lines of action of these forces are parallel
• 4. B and C above

Question: According to principle of moments_________________?

• 1. if a system of coplanar forces is in equilibrium, then their algebraic sum is zero
• 2. if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero
• 3. the algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point
• 4. positive and negative couples can be balanced

Question: According to law of triangle of forces______________?

• 1. three forces acting at a point will be in equilibrium
• 2. three forces acting at a point can be represented by a triangle, each side being proportional to force
• 3. 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
• 4. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two