 A. Turning pair
 B. Rolling pair
 C. Screw pair
 D. Spherical pair
Theory Of Machine

A ball and a socket forms a_____.

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

The ScottRussell mechanism consists of_____.
 A. Sliding and turning pairs
 B. Sliding and rotary pairs
 C. Turning and rotary pairs
 D. Sliding pairs only

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

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

Shaft revolving in a bearing is the following type of pair_____.
 A. Lower pair
 B. Higher pair
 C. Spherical pair
 D. Cylindrical pair

The number of links in pantograph mechanism is equal to_____.
 A. 2
 B. 3
 C. 4
 D. 5

If the controlling force line for a spring controlled governor when produced intersects the Yaxis at the origin, then the governor is said to be_____.
 A. Stable
 B. Unstable
 C. Isochronous
 D. None of these

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)

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