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MCQs

Total Questions : 1033 | Page 3 of 104 pages
Question 21. Which of the following is the example of lever of first order?
  1.     Arm of man
  2.     Pair of scissors
  3.     Pair of clinical tongs
  4.     All of the above
 Discuss Question
Answer: Option D. ->  All of the above
Question 22. The m.i. of hollow circular section about a central axis perpendicular to section as compared to its m.i. about horizontal axis is
  1.     same
  2.     double
  3.     half
  4.     four times
 Discuss Question
Answer: Option B. ->  double
Question 23. Two non-collinear parallel equal forces acting in opposite direction
  1.     balance each other
  2.     constitute a moment
  3.     constitute a couple
  4.     constitute a moment of couple
 Discuss Question
Answer: Option C. ->  constitute a couple
Question 24. The center of percussion of the homogeneous rod of length l suspended at the top will be
  1.     L/2
  2.     L/3
  3.     3L/4
  4.     2L/3
 Discuss Question
Answer: Option D. ->  2L/3
Question 25. A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of
  1.     r/2
  2.     r/A
  3.     r/%
  4.     0.134 r
 Discuss Question
Answer: Option D. ->  0.134 r
Question 26. 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
 Discuss Question
Answer: Option A. ->  Concurrence of the medians
Question 27. The co-efficient of friction depends upon
  1.     nature of surfaces
  2.     area of contact
  3.     shape of the surfaces
  4.     ail of the above.
 Discuss Question
Answer: Option A. ->  nature of surfaces
Question 28. Which of the following do not have identical dimensions?
  1.     Momentum and impulse
  2.     Torque and energy
  3.     Torque and work
  4.     Moment of a force and angular momentum
 Discuss Question
Answer: Option D. ->  Moment of a force and angular momentum
Question 29. A single force and a couple acting in the same plane upon a rigid body
  1.     balance each other
  2.     cannot balance each other
  3.     produce moment of a couple
  4.     are equivalent
 Discuss Question
Answer: Option B. ->  cannot balance each other
Question 30. According to lami's theorem
  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 particle 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
 Discuss Question
Answer: Option 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

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