Strength of Materials MCQs

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

A. W

B. W sin (a + $)

C. Wtan(a + <|))

D. Wan(a-)

A. 2n-3

B. n-l

C. ‘2n-l

D. n – 2

A. kilogram

B. newton

C. watt

D. dyne

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

A. weight

B. velocity

C. acceleration

D. force

A. compression or tension

B. buckling or shear

C. shear or tension

D. all of the above

A. 0.5 cm

B. 1.0 cm

C. 1.5 cm

D. 2.5 cm

A. density of metal can’t be determined

B. metal is twice as dense as water

C. metal will float in water

D. metal is twice as dense as unknown fluid

A. coefficient of friction

B. angle of friction

C. angle of repose

D. sliding friction