92. The absolute acceleration of any point P in a link about center of rotation 0 is
along PO
perpendicular to PO
at 45° to PO
along OP
none of the above.
Correct answer: (E) none of the above.
93. The Ackermann steering mechanism is preferred to the Davis type in automobiles because
the former is mathematically accurate
the former is having turning pair
the former is most economical
the former is most rigid
none of thfr above.
Correct answer: (B) the former is having turning pair
94. The advantage of the piston valve over D-slide valve is that in the former case
wear is less
power absorbed is less
both wear and power absorbed are low
the pressure developed being high provides tight sealing
there is overall economy of initial cost, maintenance and operation.
Correct answer: (C) both wear and power absorbed are low
95. The approximate straight line mechanism is a
four bar linkage
6 bar linkage
8 bar linkage
3 bar linkage
5 bar linkage.
Correct answer: (A) four bar linkage
96. The Bifilar suspension method is used to determine
natural frequency of vibration
position of balancing weights
moment of inertia
centripetal acceleration'
angular acceleration of a body.
Correct answer: (C) moment of inertia
97. The direction of Corioli's component of acceleration is the direction
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
along the centripetal acceleration
along tangential acceleration
along perpendicular to angular velocity
none of the above.
Correct answer: (A) 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
98. The e.g. of a link in any mechanism would experience
no acceleration
linear acceleration
angular acceleration
both angular and linear accelerations
none of the above.
Correct answer: (D) both angular and linear accelerations