Related Questions

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
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
The friction factor for turbulent flow in a hydraulically smooth pipe
A Depends only on Reynolds number
B Does not depend on Reynolds number
C Depends on the roughness
D None of these
Transition length for turbulent flow in smooth pipe is equal to __________ times the pipe diameter.
A 0.5
B 5
C 50
D 100
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 $${\text{f}} = \frac{{25}}{{{{\text{N}}_{{\text{Re}}}}}}$$
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 ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
A Downward at its upper end
B Upward at its upper end
C Zero at its upper end
D Perpendicular to the wall at its upper end
A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
A Towards the wall at its upper end
B Away from the wall at its upper end
C Downward at its upper end
D Upward at its upper end
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts
A Downwards at its upper end
B Upwards at its upper end
C Perpendicular to the wall at its upper end
D Zero at its upper end
On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts
A Towards the wall at its upper end
B Away from the wall at its upper end
C Upwards at its upper end
D Downwards at its upper end

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