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Test: Hydrodynamics Bearing - Mechanical Engineering MCQ


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9 Questions MCQ Test Design of Machine Elements - Test: Hydrodynamics Bearing

Test: Hydrodynamics Bearing for Mechanical Engineering 2024 is part of Design of Machine Elements preparation. The Test: Hydrodynamics Bearing questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Hydrodynamics Bearing MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydrodynamics Bearing below.
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Test: Hydrodynamics Bearing - Question 1

The bearing characteristic number shown in the graph is directly proportional to the unit bearing pressure.

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Explanation: BCN=µN/P.

Test: Hydrodynamics Bearing - Question 2

 In the graph shown, which regions points the partial metal to metal contact.

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Explanatiion: BC is the condition of thin film and hence surfaces are not completely separated.

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Test: Hydrodynamics Bearing - Question 3

Hydrodynamic lubrication takes place in region?

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Explanation: In CD thick film of lubrication has developed.

Test: Hydrodynamics Bearing - Question 4

Coefficient of friction is minimum at

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Explanation: It is minimum at the transition zone.

Test: Hydrodynamics Bearing - Question 5

 Bearing modulus is the bearing characteristic number at

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Explanation: BCN modulus is the the BCN number corresponding to the minimum coefficient of friction.

Test: Hydrodynamics Bearing - Question 6

 If viscosity of the lubricant is very low than BCN will lie in the region

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Explanation: Due to low viscosity, lubricant will not separate the two surfaces resulting in partial contact.

Test: Hydrodynamics Bearing - Question 7

The fundamental equation for viscous flow is given by ∆pbhᵌ/6µl where symbols have their usual meanings.

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Explanation: It is givenby ∆pbhᵌ/12µl.

Test: Hydrodynamics Bearing - Question 8

A single transverse weld is preferred over double transverse fillet weld.

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Explanation: A single transverse weld is not preferred because the edge of the plate which is not welded can warp out of shape.

Test: Hydrodynamics Bearing - Question 9

Transverse fillet weld can be designed using the same equations as of parallel fillet weld.

Detailed Solution for Test: Hydrodynamics Bearing - Question 9

Explanation: Vice versa is true as strength of transverse fillet weld is greater than that of parallel fillet weld.

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