Flow Through Pipes Short Question and Answer

Flow Through Pipes Short Question and Answer Points : Flow Through Pipes Short Question and Answer Q.1: Write down the name of minor head losses. Ans: (1) Head loss due to sudden enlargement.
(2) Head loss due to sudden contraction.
(3) Head loss at the entrance of pipe
(4) Head loss at exit of pipe Q.2: Write down the formula of head loss in pipe fitting. Ans: hp= kv²/2g
v = velocity of flow
k = co-efficient of pipe fitting (0.5 — 0.9) Q.3: Write down the name of major head loss formulas. Ans: (1) Darcy’s formula
(2) Chezy’s formula Q:4: A pipe of 40 mm diameter Is converging water with a velocity of 2.5 m/sec. Find the head loss at the entrance? Ans: O = 40 mm = 0.4 m
v = 2.5m/sec
he = 0.5v²/2g
= 0.5 x (2.5)² / 2 x 9.81 = 0.16m Q.5: Define the term hydraulic gradient line. Ans: The line joining pressure heads of a liquid flowing in the pipe is called hydraulic gradient line. Q.6: Define the loss of head at the entrance in a pipe. Ans: The loss of head due o entrance of pipe is actually u loss due to sudden contraction and depends upon the form of entrance. The value of loss of head of entrance has been found to be equal to he = 0.5v²/2g Q.7: Define the loss of head at the exit of a pipe. Ans: A loss due to the energy of head which flowing the liquid possesses by virtue of its motion. The value of loss of head at exit has been found to be equal to h = v²/2g.