Civil Engineering - Hydraulics

Exercise :: Hydraulics - Section 5
1.
Water flows through a convergent mouthpiece of diameter 4 cm at convergence under a head of 3 metres. If the maximum vacuum pressure is 9 metres of water, the maximum diameter of divergence, to aviod separation of flow, is

Answer: Option C

Explanation:

2.
An ideal fluid

A.
is frictionless and incompressible B.
obeys Newton's law of velocity C.
is similar to gas D.
is very viscous.

Answer: Option A

Explanation:

3.
In C.G.S. system the units of kinematic viscosity, is

A.
stoke B.
poise C.
Newton D.
none of these.

Answer: Option A

Explanation:

4.
A triangular notch is preferred to a rectangular notch because

A.
only one reading is required B.
its formula is simple to remember C.
it gives more accurate results for low discharge D.
it measures a wide range of flows accurately E.
all the above.

Answer: Option E

Explanation:

5.
In case of laminar flow through a circular pipe,

A.
momentum correction factor is 1.33 B.
energy correction factor is 2.00 C.
both (a) and (b) D.
Neither (a) nor (b).

Answer: Option C

Explanation: