Multiple Choice 6. Friction in ball bearings does not depend on the following a.

Question

Multiple Choice 6. Friction in ball bearings does not depend on the following a. Temperature b. Speed c. Type of lubrication d. None of the above 7. Which of the following need to be identical for a set of meshing gears: a. Number of teeth b. Pitch diameter c. Clearance d. Module 8. The Weibull model is preferred for bearing analysis based on which of the following a. Capability to account for skewed data b. Popularity with approximating reliability c. Ability to have a minimum value d. All of the above 9. A humpage gear set has exactly one of which of the following a. Worm gear b. Input shaft c. Coaxial gears d. Compound gears 10. A finite element mesh has been developed for a cantilever beam with a single point load at the free end. As a part of the calculation, the engineer has input a slightly higher load than that experienced in the beam. What type of error is this? a. Computation Error b. Discretization Error c. Modeling Error d. Singularity Error

Explanation / Answer

6) Friction in ball bearings does not depends on teperature i.e option (a)

7) Two gears in mesh must have same module otherwise law of gearing will not satisfy i.e option (d)

8) Weibull model has capability to account both right and left skewed data, popular for its reliability the

answer is option (d).

9) In Humpage’s speed reduction gear, both the driving shafts are co-axial. i.e option (c)

10) It comes under computational error

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