Related Questions

In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of
A Relative roughness
B Absolute roughness
C Friction co-efficient for flows at equal Reynold number
D All of the above
For a given Reynolds number, in a hydraulically smooth pipe, further smoothening __________ the friction factor.
A Brings about no further reduction of
B Increases
C Decreases
D None of these
A pipe is defined as 'hydraulically smooth', if the friction factor
A Is not a function of Reynolds number
B For a given Reynolds number remains constant even on further smoothening of the pipe
C Is zero irrespective of the Reynolds number
D None of these
In turbulent flow, a rough pipe has the same friction factor as a smooth pipe
A In the zone of complete turbulence
B When the roughness projections are much smaller than the thickness of the laminar film
C Everywhere in the transition zone
D When the friction factor is independent of the Reynold's number
For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance 'd' measured from the wall of the pipe and the friction velocity 'v', and it follows a __________ relationship.
A Logarithmic
B Linear
C Hyperbolic
D Parabolic
Transition length for turbulent flow in smooth pipe is equal to __________ times the pipe diameter.
A 0.5
B 5
C 50
D 100
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
A 6 hours
B 10 hours
C 15 hours
D 30 hours
A water tank with 64-gallon capacity is filled by pipe A and emptied by pipe B. If the rate of water flow through pipe A is 2 gallons per hour, how many gallons per hour should flow through pipe B so that when both pipes are open, the initially empty tank shold be full in exactly 96 hours?
A 3/8
B 4/3
C 2/3
D 8/3
Friction factor for turbulent flow in a new pipe is given by
A $${\text{f}} = \frac{{16}}{{{{\text{N}}_{{\text{Re}}}}}}$$
B $${\text{f}} = \frac{{0.04}}{{{{\text{N}}_{{\text{Re}}}}^{0.16}}}$$
C $${\text{f}} = 0.22\,{{\text{N}}_{{\text{Re}}}}^{0.5}$$
D $${\text{f}} = \frac{{25}}{{{{\text{N}}_{{\text{Re}}}}}}$$
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
A Length of the pipe
B Diameter of the pipe
C Density of the fluid
D Velocity of the fluid

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