Both white phosphorous as well as red phosphorous

Question: Fanning friction factor is equal to(where, fB = Blassius friction factor).
[A].

fB/4

[B].

fB/2

[C].

4fB

[D].

2fB

Answer: Option A

Explanation:

No answer description available for this question.

Question: In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
[A].

Discharge of water by a centrifugal pump being run at a constant rpm.

[B].

Water flow in the suction and discharge pipe of a reciprocating pump.

[C].

Water discharge from a vertical vessel in which constant level is maintained.

[D].

Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe.

Answer: Option B

Explanation:

No answer description available for this question.