Chemical Engineering - Chemical Engineering Basics

16. 

When a tuning fork vibrates, the waves produced in the fork are

A. stationary
B. longitudinal
C. progressive
D. transverse

Answer: Option B

Explanation:

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17. 

Fatigue limit of a material should not be increased by

A. shot peening
B. surface decarburisation
C. understressing
D. cold working

Answer: Option B

Explanation:

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18. 

For a fixed cross-sectional area, the most economical channel section has maximum

A. wetted perimeter.
B. fluid discharge rate.
C. fluid velocity.
D. depth of flowing fluid.

Answer: Option B

Explanation:

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19. 

Pellets are not as popular a burden as sinter in the iron blast furnace, because of their

A. shape.
B. swelling tendency.
C. poor reducibility.
D. low mechanical strength.

Answer: Option B

Explanation:

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20. 

A form of stress corrosion failure termed as 'season cracking' is generally observed in

A. thermosetting polymers.
B. high carbon steels.
C. brasses.
D. borosilicate glasses.

Answer: Option C

Explanation:

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