Machine Design Questions and Answers – Sliding Contact Bearings

This set of Machine Design Multiple Choice Questions & Answers (MCQs) focuses on “Sliding Contact Bearings”.

1. Thick film lubrication describes a phenomenon where two surfaces are _______ separated.
a) Completely
b) Partially
c) Not
d) None of the mentioned
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2. Hydrodynamic bearing is a self-acting bearing.
a) True
b) False
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3. A journal bearing is a ______ contact bearing working on the hydrodynamic lubrication and which supports load in____ direction.
a) Sliding, Axial
b) Rolling, Radial
c) Sliding, Radial
d) Rolling, Axial
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4. Partial bearing is preferred over journal bearing.
a) True
b) No
c) More friction losses
d) Can’t be determined
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5. Temperature rise in partial bearing is ____ than full bearing.
a) Lesser
b) Greater
c) Equal
d) Undeterminable
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6. A clearance bearing is design accurately to keep the radius of journal and bearing equal.
a) Journal radius is kept larger
b) Journal radius is kept smaller
c) True
d) Can’t be determined
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7. Fitted bearing must be partial bearing.
a) True
b) No
c) No lubricating space is required
d) Can’t be stated
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8. Footstep bearing is an axial load bearing.
a) True
b) Thrust load
c) Shear load
d) None of the listed
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9. Hydrostatic and hydrodynamic lubrication are the same thing.
a) True
b) False
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10. If we exclude the cost factor, which bearing is preferred?
a) Hydrostatic
b) Hydrodynamic
c) Both are equally preferred
d) Cannot be determined
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11. If fluid film pressure is high and surface rigidity is low than mode of lubrication is called as elastohydrodynamic lubrication.
a) True
b) False
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Sanfoundry Global Education & Learning Series – Machine Design.
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