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Mechanical Engineering Objective Questions { Theory of Machines }

99. Two systems shall be dynamically equivalent when
A.The mass of two are same
B.E.g. of two coincides
C.M.I. of two about an axis through e.g. is equal
D.All of the above
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100. The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
A.Joining the corresponding points
B.Perpendicular to line as per (a)
C.Not possible to determine with these data
D.At 450 to line as per (a)
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101. The absolute acceleration of any point P in a link about centre of rotation 0 is
A.Along PO
B.None of the above.
C.At 450 to PO
D.Along OP
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102. Angular -acceleration of a link can be determined by dividing the
A.Centripetal component of acceleration with length of link
B.Tangential component of acceleration with length of link
C.Resultant acceleration with length of link
D.All of the above
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103. Corioli's component of acceleration exists whenever a point moves along a path that has
A.Linear displacement
B.Rotational motion
C.Tangential acceleration
D.Centripetal acceleration
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104. The direction of Corioti's component of acceleration is the direction
A.Of relative velocity vector for the two coincident points rotated by 900 in the direction of the angular velocity of the rotation of the link
B.Along the centripetal acceleration
C.Along tangential acceleration
D.Along perpendicular to angular velocity
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105. The magnitude of tangential acceleration is equal to
A.Velocity2 x crankradius
B.Velociti/crank radius
C.(velocity/crank radius)2
D.Velocity x crank radius2
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