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Porous Bearings - Powder Metallurgy MCQ Questions

Porous Bearings MCQs : Here you will find MCQ Questions related to "Porous Bearings" in Powder Metallurgy. These Porous Bearings MCQ Questions Will help you to improve your Powder Metallurgy knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations

Question 1

Most porous-metal bearings consist of ?

A. bronze
B. iron
C. Both A and B
D. steel

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Question 2

These voids take up to _________ of the total volume

A. 0 to 25%
B. 5 to 15%
C. 10 to 20%
D. 10 to 35%

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Question 3

In Aluminum, The limiting PV value is?

A. 10000
B. 50000
C. 75000
D. 25000

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Question 4

Sizing reduces interconnected porosity and produces greater strength?

A. Yes
B. No
C. Can be yes or no
D. Can not say

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Question 5

What should be added to the iron powder mix to improve the speed capability?

A. Bismuth
B. Lead
C. Vanadium
D. Molybdenum

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Question 6

What is the PV value for thrust bearings?

A. 5000
B. 25000
C. 20000
D. 10000

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Question 7

Which kind of bearing material is suitable for oscillating and reciprocating motions?

A. Low-graphite content
B. High-oil content
C. High graphite content
D. High porosity

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Question 8

Leaded bronzes: Have a 20% reduction of the tin content of the usual 90-10 bronze and 4% reduction in copper.

C. Can be true or false
D. Can not say

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Question 9

The load carrying capacity of bearing is expressed as the _______

A. efficiency factor
B. work factor
C. performance factor
D. capability factor

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Question 10

Hardenable copper iron: The addition of 1 1/2% free carbon to copper-iron materials allows them to be heat treated to a particle hardness of Rockwell C65

A. Yes
B. No
C. Can be yes or no
D. Can not say

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