Questions
121
The direction of Corioli’s component of acceleration is the direction
Answer: of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
122
Corioli’s component of acceleration exists whenever a point moves along a path that has
Answer: rotational motion
123
Angular acceleration of a link can be determined by dividing the
Answer: tangential component of acceleration with length of link
124
The absolute acceleration of any point P in a link about center of rotation 0 is
Answer: none of the above
125
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line
Answer: joining the corresponding points
127
Instantaneous center of rotation of a link in a four bar mechanism lies on
Answer: can’t occur
128
The Bifilar suspension method is used to determine
Answer: moment of inertia
129
The frequency of oscillation at compared to earth will be
Answer: 2.44 times,less
131
In S.H.M., the velocity vector w.r.t. displacement vector
Answer: leads by 90°
132
For simple harmonic motion of the of follower, a cosine curve represents
Answer: acceleration diagram
133
In above example, the minimum length of the coupler will be
Answer: slightly more than 45 mm
134
Kinematic pairs are those which have
Answer: two elements having relative motion
135
In a darg link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is
Answer: less than sum of other two
137
Which of the following mechanisms produces mathematically an exact straight line motion
Answer: Peaucellier’s mechanism
138
Whitworth quick return mechanism is obtained by inversion of
Answer: slider crank mechanism
139
For a kinematic chain to be considered as mechanism
Answer: one link should be fixed
