- A. Turning pair
- B. Rolling pair
- C. Screw pair
- D. Spherical pair
Theory Of Machine
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A ball and a socket forms a_____.
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In a spring controlled governor, when the controlling force _____ as the radius of rotation increases, it is said to be a stable governor.
- A. Remains constant
- B. Decreases
- C. Increases
- D. None of these
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The Scott-Russell mechanism consists of_____.
- A. Sliding and turning pairs
- B. Sliding and rotary pairs
- C. Turning and rotary pairs
- D. Sliding pairs only
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In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to_____.
- A. 0.2
- B. 0.4
- C. 0.6
- D. 0.8
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Which of the following disciplines provides study of relative motion between the parts of a machine?
- A. Theory of machines
- B. Applied mechanics
- C. Mechanisms
- D. Kinematics
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Shaft revolving in a bearing is the following type of pair_____.
- A. Lower pair
- B. Higher pair
- C. Spherical pair
- D. Cylindrical pair
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The number of links in pantograph mechanism is equal to_____.
- A. 2
- B. 3
- C. 4
- D. 5
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If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be_____.
- A. Stable
- B. Unstable
- C. Isochronous
- D. None of these
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In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to_____.
- A. x₁/x₂
- B. log(x₁/x₂)
- C. loge(x₁/x₂)
- D. log(x₁.x₂)
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In a gear having involute teeth, the normal to the involute is a tangent to the_____.
- A. Pitch circle
- B. Base circle
- C. Addendum circle
- D. Dedendum circle