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MCQs

Total Questions : 1187 | Page 116 of 119 pages
Question 1151. The algebraic sum of moments of the forces forming couple about any point in their plane is
  1.    Equal to the moment of the couple
  2.    Constant
  3.    Both of above are correct
  4.    Both of above are wrong
 Discuss Question
Answer: Option A. -> Equal to the moment of the couple
Question 1152. The forces which do not meet at one point and their lines of action do not lie on the same plane are known as
  1.    Coplanar concurrent forces
  2.    Coplanar non-concurrent forces
  3.    None of these
  4.    Non-coplanar concurrent forces
 Discuss Question
Answer: Option C. -> None of these
Question 1153. The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.
  1.    None of these
  2.    Inversely
  3.    Directly
  4.    Square root
 Discuss Question
Answer: Option B. -> Inversely
Question 1154. The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is
  1.    4mr²/5
  2.    3mr²/10
  3.    2mr²/5
  4.    3mr²/5
 Discuss Question
Answer: Option B. -> 3mr²/10
Question 1155. A redundant frame is also called __________ frame.
  1.    Imperfect
  2.    None of these
  3.    Perfect
  4.    Deficient
 Discuss Question
Answer: Option A. -> Imperfect
Question 1156. If the body falls freely under gravity, then the gravitational acceleration is taken as
  1.    -8.9 m/s2
  2.    +8.9 m/s2
  3.    +9.8 m/s2
  4.    -9.8 m/s2
 Discuss Question
Answer: Option C. -> +9.8 m/s2
Question 1157. The horizontal range of a projectile (R) is given by
  1.    R = u² cosα/g
  2.    R = u² sinα/g
  3.    R = u² cos2α/g
  4.    R = u² sin2α/g
 Discuss Question
Answer: Option D. -> R = u² sin2α/g
Question 1158. The moment of inertia of a square of side a about its diagonal is
  1.    a³/12
  2.    a²/8
  3.    a⁴/16
  4.    a⁴/12
 Discuss Question
Answer: Option D. -> a⁴/12
Question 1159. The velocity ratio of a single purchase crab winch can be increased by
  1.    Increasing the number of teeth of the pinion
  2.    All of these
  3.    Increasing the length of the handle
  4.    Increasing the radius of the load drum
 Discuss Question
Answer: Option C. -> Increasing the length of the handle
Question 1160. The ratio of static friction to dynamic friction is always
  1.    None of these
  2.    Equal to one
  3.    Less than one
  4.    Greater than one
 Discuss Question
Answer: Option D. -> Greater than one

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