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MCQs

Total Questions : 543 | Page 5 of 55 pages
Question 41. In a reciprocating steam engine, which of the following forms a kinematic link?
  1.    Cylinder and piston
  2.    Piston rod and connecting rod
  3.    Crankshaft and flywheel
  4.    Flywheel and engine frame
 Discuss Question
Answer: Option C. -> Crankshaft and flywheel
Question 42. The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at
  1.    The center of the disc
  2.    The point of contact
  3.    An infinite distance on the plane surface
  4.    The point on the circumference situated vertically opposite to the contact point
 Discuss Question
Answer: Option B. -> The point of contact
Question 43. In a shaper mechanism, the Coriolis component of acceleration will
  1.    Not exist
  2.    Exist
  3.    Depend on position of crank
  4.    None of the above
 Discuss Question
Answer: Option B. -> Exist
Question 44. The Coriolis component of acceleration acts
  1.    Along the sliding surface
  2.    Perpendicular to the sliding surface
  3.    At 45° to the sliding surface
  4.    Parallel to the sliding surface
 Discuss Question
Answer: Option B. -> Perpendicular to the sliding surface
Question 45. Which of the following statements regarding laws governing the friction between dry surfaces are correct?
  1.    The friction force is dependent on the materials of the contact surfaces.
  2.    The friction force is directly proportional to the normal force.
  3.    The friction force is independent of me area of contact.
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 46. A shaft carrying three rotors will have
  1.    No node
  2.    One node
  3.    Two nodes
  4.    Three nodes
 Discuss Question
Answer: Option C. -> Two nodes
Question 47. The relative velocity of B with respect to A in a rigid link AB is
  1.    Parallel to AB
  2.    Perpendicular to AB
  3.    Along AB
  4.    At 45° to AB
 Discuss Question
Answer: Option B. -> Perpendicular to AB
Question 48. The unbalanced force due to revolving masses
  1.    Varies in magnitude but constant in direction
  2.    Varies in direction but constant in magnitude
  3.    Varies in magnitude and direction both
  4.    Constant in magnitude and direction both
 Discuss Question
Answer: Option B. -> Varies in direction but constant in magnitude
Question 49. For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is
  1.    Maximum and zero
  2.    Zero and maximum
  3.    Minimum and maximum
  4.    Zero and minimum
 Discuss Question
Answer: Option A. -> Maximum and zero
Question 50. Which of the below are inversions of slider crank mechanism? 1. Oscillating cylinder engine mechanism 2. Toggle mechanism 3. Radial cylinder engine mechanism 4. Quick return mechanism
  1.    1, 2 and 4
  2.    2, 3 and 4
  3.    1, 2 and 3
  4.    1, 3 and 4
 Discuss Question
Answer: Option D. -> 1, 3 and 4

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