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MCQs

Total Questions : 1187 | Page 9 of 119 pages
Question 81. In order to determine the effects of a force, acting on a body, we must know
  1.     Magnitude of the force
  2.     Line of action of the force
  3.     Nature of the force i.e. whether the force is push or pull
  4.     All of the above
 Discuss Question
Answer: Option D. ->  All of the above
Question 82. Which of the following statement is correct?
  1.     The algebraic sum of the forces, constituting the couple is zero
  2.     The algebraic sum of the forces, constituting the couple, about any point is the same
  3.     A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense
  4.     All of the above
 Discuss Question
Answer: Option D. ->  All of the above
Question 83. The process of finding out the resultant force is called __________ of forces.
  1.     Composition
  2.     Resolution
  3.     Decomposition
  4.     None of these
 Discuss Question
Answer: Option A. ->  Composition
Question 84. The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.
  1.     Equal to
  2.     Less than
  3.     Greater than
  4.     None of these
 Discuss Question
Answer: Option A. ->  Equal to
Question 85. The time of flight of a projectile on downward inclined plane depends upon
  1.     Angle of projection
  2.     Angle of inclination of the plane
  3.     Both (A) and (B)
  4.     None of these
 Discuss Question
Answer: Option C. ->  Both (A) and (B)
Question 86. In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.
  1.     Less than
  2.     Equal to
  3.     More than
  4.     None of these
 Discuss Question
Answer: Option A. ->  Less than
Question 87. Tangent of angle of friction is equal to
  1.     Kinetic friction
  2.     Limiting friction
  3.     Angle of repose
  4.     Coefficient of friction
 Discuss Question
Answer: Option D. ->  Coefficient of friction
Question 88. Frictional force encountered after commencement of motion is called
  1.     Limiting friction
  2.     Kinematic friction
  3.     Frictional resistance
  4.     Dynamic friction
 Discuss Question
Answer: Option D. ->  Dynamic friction
Question 89. 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 90. The centre of percussion is below the centre of gravity of the body and is at a distance equal to
  1.     h/kG
  2.     h2/kG
  3.     kG2/h
  4.     h × kG
 Discuss Question
Answer: Option C. ->  kG2/h

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