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Mechanical Engineering Objective Questions { Theory of Machines }



92. The frequency of oscillation' of a bigger diameter cylinder compared to a small cylinder inside a cylindrical c/oncave surface will be
A. Less
B. More
C. Same
D. Data are insufficient to determin. same
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93. If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be
A. Less
B. More
C. Same
D. Data are insufficient to determine same
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94. The Bifilar suspension method is used to determine
A. Natural frequency of vibration
B. Position of balancing weights
C. Moment of inertia
D. Centripetal acceleration -
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95. Which is the false statement about the properties of instantaneous centre
A. At the instantaneous centre of rotation, one rigid link rotates instantaneously relative to another for the configuration of mechanism considered
B. The two rigid links have no linear velocities relative to each other at the instantaneous centre
C. The two rigid links which have no linear velocity relative to each other at this centre have the same linear velocity to the third rigid link
D. The double centre can be denoted either by 021 or 012, but proper selection should be made
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96. InstantanL 'Ins center of rotation of a link in a four bar mechanism lies on
A. Right side pivot of this link
B. Lift side pivot of this link
C. A point obtained by intersection on extending adjoining links
D. Can't occur
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97. The number of links and instantaneous centres in a reciprocating engine mechanism are
A. 4, 4
B. 4, 6.
C. 5, 4
D. (c) 6, 4
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98. According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centres lie on
A. A triangle
B. A point
C. Two lines
D. A straight line
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