Terms Flashcards
It is defined as the mass per unit volume of a substance:
mass density
“At any point in a fluid at rest the pressure is the same in
all directions” this Law is known as:
Pascal’s Law
The pressure measured by means or gages above or
below the atmospheric level is called:
absolute pressure
The pressure measure above the absolute zero is called:
vapor pressure
A pressure measuring technique by means of tubes
usually shaped in the form of U’s and utilizing the principles
of hydrostatic is known as:
barometry
A type of manometer which is used for measuring gage
pressure with the use of gage liquid. This type contains an
atmospheric level.
open type
A manometer used for measuring the difference in
pressure between two points and does not have an
atmospheric level.
differential manometer
The centroid of the submerged coincides with the center
of pressure if:
the surface is horizontal
When the center of gravity of a floating body is farther
than the metacenter when referred to the center of
buoyancy (considering that the center of gravity is above the
center of buoyancy), the floating body is in:
unstable equilibrium
The horizontal component of the hydrostatic force
acting on the curved surface is equal to
Hyrdrostatic force acting of the vertical projection of the
curved surface.
The most efficient section for an open channel is:
semi-circular section
“Anybody submerged in a fluid is acted upon by and
unbalanced force (buoyant force) which is equal to the
weight of the displaced fluid”. This principle is known as:
Archimedes Principle
The metacentric height of a floating body is the distance
from the metacenter to the:
center of gravity
In a system of pipes in parallel, the:
head losses are equal
The buoyant force, BF, which is equal to the weight of
the displaced fluid is acting at the:
centroid of the displaced volume of fluid
A floating body is said to be stable when the metacenter
is:
above the center of gravity
The use of Angat Dam (in Bulacan) is multi-purpose in
nature and in case of extreme energy during periods of long
drought, the priority use of water will be:
water supply use
Deep groundwater deposits where underground water
are available for water supply and irrigation is known as:
aquifers
The distribution of discharge from all runoff sources
plotted as a function of time results to a graph which is
known as:
mass curve
In a horizontal uniform circular pipe, the head loss
between any two flow section is a direct measure of.
the difference in pressure heads & difference in the
elevation heads
In a system of pipes in series, the:
flows are equal
In fluid flow, if the fluid travels parallel to the adjacent
layers and the paths of individual particles do not cross; the
flow is said to be:
laminar
The headloss in a nozzle usually expressed in terms of:
the coefficient of velocity and velocity head
The locus of the elevation to which water will rise in a
piezometer tube is termed as:
the hydraulic gradient