## Lakshya Education MCQs

Question: In a flat collar pivot bearing, the moment due to friction is proportional to
Options:
 A. (r₁² - r₂²)/(r₁ - r₂) B. (r₁² - r₂²)/(r₁ + r₂) C. (r₁³ - r₂³)/(r₁² - r₂²) D. (r₁³ - r₂³)/(r₁ - r₂)

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## More Questions on This Topic :

Question 1. The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
1.     Increases
2.     Decreases
3.     Remain same
4.     None of these
Question 2. Longitudinal vibrations are said to occur when the particles of a body moves
1.     Perpendicular to its axis
2.     Parallel to its axis
3.     In a circle about its axis
4.     None of these
Question 3. Torsional vibrations are said to occur when the particles of a body moves
1.     Perpendicular to its axis
2.     Parallel to its axis
3.     In a circle about its axis
4.     None of these
Question 4. Torsional vibrations are said to occur when the particles of a body moves
1.     Perpendicular to its axis
2.     Parallel to its axis
3.     In a circle about its axis
4.     None of these
Question 5. If ‘d₁’ and ‘d₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to
1.     D₁/D₂
2.     D₂/D₁
3.     D₁.D₂
4.     D₁