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MCQs

Total Questions : 2100 | Page 7 of 210 pages
Question 61. In multi V-belt transmission, if one of the belt is broken, we have to change the
  1.    Broken belt
  2.    Broken belt and its adjacent belts
  3.    All the belts
  4.    There is no need of changing any one as remaining belts can take care of transmission of load
 Discuss Question
Answer: Option C. -> All the belts
Question 62. A spring controlled governor is found unstable. It can be made stable by
  1.    Increasing the spring stiffness
  2.    Decreasing the spring stiffness
  3.    Increasing the ball mass
  4.    Decreasing the ball mass
 Discuss Question
Answer: Option B. -> Decreasing the spring stiffness
Question 63. A governor is said to be stable, if the
  1.    Radius of rotation of balls increases as the equilibrium speed decreases
  2.    Radius of rotation of balls decreases as the equilibrium speed decreases
  3.    Radius of rotation of balls increases as the equilibrium speed increases
  4.    Radius of rotation of balls decreases as the equilibrium speed increases
 Discuss Question
Answer: Option C. -> Radius of rotation of balls increases as the equilibrium speed increases
Question 64. In a hydrodynamic journal bearing, there is
  1.    A very thin film of lubricant between the journal and the bearing such that there is contact between the journal and the bearing
  2.    A thick film of lubricant between the journal and the bearing
  3.    No lubricant between the journal and the bearing
  4.    A forced lubricant between the journal and the bearing
 Discuss Question
Answer: Option B. -> A thick film of lubricant between the journal and the bearing
Question 65. A pulley and belt in a belt drive form a
  1.    Cylindrical pair
  2.    Turning pair
  3.    Rolling pair
  4.    Sliding pair
 Discuss Question
Answer: Option C. -> Rolling pair
Question 66. Elements of pairs held together mechanically is known as
  1.    Closed pair
  2.    Open pair
  3.    Mechanical pair
  4.    Rolling pair
 Discuss Question
Answer: Option A. -> Closed pair
Question 67. Carnot cycle is
  1.    a reversible cycle
  2.    an irreversible cycle
  3.    a semi-reversible cycle
  4.    a quasi static cycle
 Discuss Question
Answer: Option A. -> a reversible cycle
Question 68. The unbalanced primary forces in a reciprocating engine are
  1.    Balanced completely
  2.    Balanced partially
  3.    Balanced by secondary forces
  4.    Not balanced
 Discuss Question
Answer: Option B. -> Balanced partially
Question 69. A motor car moving at a certain speed takes a left turn in a curved path. If the engine rotates in the same direction as that of wheels, men due to centrifugal force
  1.    The reaction on me inner wheels increases and on the outer wheels decreases
  2.    The reaction on the outer wheels increases and on the inner wheels decreases
  3.    The reaction on the front wheels increases and on the rear wheels decreases
  4.    The reaction on the rear wheels increases and on the front wheels decreases
 Discuss Question
Answer: Option B. -> The reaction on the outer wheels increases and on the inner wheels decreases
Question 70. If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be
  1.    Less
  2.    More
  3.    Same
  4.    Data are insufficient to determine same
 Discuss Question
Answer: Option A. -> Less

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