In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

Question: Out of the following, the dimensionless quantity is
[A].

specific weight

[B].

viscosity

[C].

Mach number

[D].

density

Answer: Option C

Explanation:

No answer description available for this question.

Question: In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.
[A].

0.5

[B].

1

[C].

5

[D].

20

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.
[A].

Collar

[B].

Flanged

[C].

Bell and Spigot

[D].

Expansion

Answer: Option B

Explanation:

No answer description available for this question.

Question: Fine grain size in metallic material will
[A].

increase the yield strength.

[B].

increase the creep strength.

[C].

increase the fatigue strength.

[D].

decrease the impact strength.

Answer: Option C

Explanation:

No answer description available for this question.