Q. Which of the following displacement diagrams should be chosen for better dynamic performance of a cam-follower mechanism ?
✅ Correct Answer: (C)
cycloidal motion
Dynamics of Machines MCQs | Page - 3
Dear candidates you will find MCQ questions of Dynamics of Machines here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. The linear velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
✅ Correct Answer: (C)
ωr1+r2)sinθsec2θ
Q. The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by
✅ Correct Answer: (C)
(r-r1)(1-cosθ)
Q. The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by
✅ Correct Answer: (A)
ω2×oq
Q. Centre of masses of the system lies on the axis of rotation.
✅ Correct Answer: (D)
1, 3 and 4 only
Q. The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that
✅ Correct Answer: (C)
its natural frequency is equal to the frequency of vibration
Q. Critical speed is expressed as
✅ Correct Answer: (D)
natural frequency of the shaft
Q. The first critical speed of an automobile running on a sinusoidal road is calculated by (modeling it as a single degree of freedom system)
✅ Correct Answer: (A)
resonance
Q. The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon = gearth/6) is
✅ Correct Answer: (A)
ωn
Q. A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural frequency (fn), respectively, are
✅ Correct Answer: (A)
0.471 and 1.19 hz
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