Description

Strength of Materials

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Question No. 01
According to Lami’s theorem

• (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 particle 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

Answer: Option D

Question No. 02
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 perpendicular directions are both zero
• (D) All of them are inclined equally

Answer: Option C

Question No. 03
The center of gravity of a triangle lies at the point of

• (A) Concurrence of the medians
• (B) Intersection of its altitudes
• (C) Intersection of bisector of angles
• (D) Intersection of diagonals

Answer: Option A