Practice Test: Question Set - 01
1. 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
2. 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
3. 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
4. Angle of friction is the
- (A) Angle between normal reaction and the resultant of
normal reaction and the limiting friction
- (B) Ratio of limiting friction and normal reaction
- (C) The ratio of minimum friction force to the
friction force acting when the body is just about to move
- (D) The ratio of minimum friction force to friction
force acting when the body is in motion
5. Limiting force of friction is the
- (A) Tangent of angle between normal reaction and
the resultant of normal reaction and limiting friction
- (B) Ratio of limiting friction and normal reaction
- (C) The friction force acting when the body is just
about to move
- (D) The friction force acting when the body is in
motion
6. The necessary condition for forces to be in equilibrium is that these should be
- (A) Coplanar
- (B) Meet at one point
- (C) Both (A) and (B) above
- (D) All be equal
7. Which of the following is the example of lever of first order?
- (A) Arm of man
- (B) Pair of scissors
- (C) Pair of clinical tongs
- (D) All of the above
8. A cable with a uniformly distributed load per horizontal metre run will take the following shape
- (A) Straight line
- (B) Parabola
- (C) Hyperbola
- (D) Elliptical
9. In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than
- (A) Two members with unknown forces of the frame
- (B) Three members with unknown forces of the frame
- (C) Four members with unknown forces of the frame
- (D) Three members with known forces of the frame
10. According to principle of transmissibility of forces, the effect of a force upon a body is
- (A) Maximum when it acts at the center of gravity of a
body
- (B) Different at different points in its line of action
- (C) The same at every point in its line of
action
- (D) Minimum when it acts at the C.G. of the body
11. Which of the following do not have identical dimensions?
- (A) Momentum and impulse
- (B) Torque and energy
- (C) Torque and work
- (D) Moment of a force and angular momentum
12. If a number of forces act simultaneously on a particle, it is possible
- (A) Not a replace them by a single force
- (B) To replace them by a single force
- (C) To replace them by a single force through
C.G.
- (D) To replace them by a couple
13. Two coplanar couples having equal and opposite moments
- (A) Balance each other
- (B) Produce a couple and an unbalanced force
- (C) Are equivalent
- (D) Produce a moment of couple
14. If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be
- (A) Maximum
- (B) Minimum
- (C) Zero
- (D) Infinity
15. Kinetic friction is the
- (A) Tangent of angle between normal reaction and
the resultant of normal reaction and the limiting friction
- (B) Ratio of limiting friction and normal reaction
- (C) The friction force acting when the body is just
about to move
- (D) The friction force acting when the body is in
motion
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