TOTAL TERMS PT 6
Water retained as puddles
In hydrology, depression storage is: N96
Remain the same
In laboratory test of determining the maximum dry density of a soil, if the compaction pressure is increased, the maximum dry density will: M12
Bulk density
In soil properties, the ratio of the total mass to the total volume of solids is called: M01
Filtration
In wastewater treatment, the process of removing fine residual suspended solids is known as: N01
Temperature inversion
This occurs whenever the normal decrease of atmospheric temperature or moisture or both with height changes anomalously over a relatively short vertical interval. N00
None of these
Which of the following does not affect the settlement of a footing: A. Location of GWT B. Depth of backfill C. Plasticity of the soil D. None of these N15
Practically impermeable
Which of the following is NOT a characteristic of a cohesionless soil. A. Easy to compact B. High shear strength C. Prone to settlement due to vibrating load D. Practically impermeable M18
Possess low shear strength
Which of the following is not a characteristic of cohesive soil? A. Possess low shear strength B. Practically permeable C. Plastic and compressible D. Decrease shear strength when distributed N16
Gas
Which of the following is not a soil component? A. Organic materials B. Minerals C. Gas D. None of these N15
precipitation
Which of the following is the primary source of water supply? N99
Compressibility
Which of the following property of soil is necessary in the design of footing? N04
The effective pressure at the bottom of the layer will decrease
Which of the following statement is correct when the water table rises by 1 m? M14
The effective pressure at the bottom of the layer will decrease
Which of the following statements is correct when the water table rises to the ground surface? M12
Archimedes
Which of the following states the law of buoyancy? N15
arch dam
Which type of dam may potentially have the smallest cross section? M97
Decrease
When water table rises, what is its effect on effective stress? M12
moisture-density test
A test in soil where the first mold is line with vaseline then a fully saturated soil is gradually poured into the mold. This soil test is known as: M99
Cohesion
Which component of rock or soil is independent of interparticle friction? N15
24 to 48
A cohesive soil deposit is considered soft if the unconfined compression strength in kPa is between: M22
Aqueduct
A conduit, closed or open , designed to convey water from a source to a point, usually a reservoir, where the distribution system begins N98
Steady flow
A flow in which the velocity of the fluid at a particular fixed point does not change with time. N15
rating curve
A graph that plots the measured stream flow discharge versus water surface elevation N95
Hydraulic gradient
A line joining the points of highest elevation of water in a series of vertical open pipes rising from a pipeline in which water flows under pressure is referred to as N21
Hydraulic gradient
A line joining the points of highest elevation of water in a series of vertical pipes rising from a pipeline in which water flows under pressure is referred to as M16
isobar
A line on a weather map connecting points of equal atmospheric pressure is called: N99
Liquefaction
A phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading. N15
Effective stress
A pile of sand keeps from spreading out like a liquid because the weight of the sand keeps the grain stuck together in their current arrangement, mostly out of static friction. This weight and pressure is called. N15
Sieve analysis
A practice or procedure used to assess the particle size distribution (also called gradation) of a granular material. The size distribution is often of critical importance to the way the material performs in use. N15
Water hammer
A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as M16
Hydrodynamics
A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as N21
Sewage
A sewage pipe carries: N00
Sanitary Sewer
A sewer intended to carry only sanitary sewage. N98
Effluent stream
A stream channel with perennial flow: N96
Ozone
A strong oxidizing agent. It improves the effectiveness of subsequent coagulation, apparently by polymerization of metastable organics; aids in removal of musty, earthy, fishy and muddy tastes and odors. It breaks down the unstable gas into two atoms of oxygen. M00
Joules
A unit for work in N-m is called: N96
shear stress and angular deformation rate
Absolute viscosity of a fluid varies with pressure and temperature and is defined as function of: N95
Gravel
According to USCS, what do you call a soil grain with grain size greater than 4.75 mm but less than 75 mm? N15
hydrant
Which of the following devices regulates the distribution of flow of water? M99
Half circle
Assuming the same cross-sectional area and slope, which of the following open channel shapes will give the highest discharge? N98
varies directly as the velocity
At or below critical velocity in small pipe or at a very low velocities, the loss of head due to friction: N95
nitrogen
Dry air consist of different gases. Which of the following component has the greatest quantity M99
isentropic
If heat transfer Q is zero and the flow is frictionless it is called M97
Decreasing
If the ground water table in a soil formation rises as a resulting of flooding, the bearing capacity of the soil N21
viscous shear between particles of fluid
In a perfectly smooth pipe with laminar flow, the coefficient of pipe friction is due to: N97
Bernoulli
In any stream flowing steadily without friction the total energy contains is the same at every point in its path of flow. The principle is attributed to: N16
Equipotential lines
In flow net construction of determining seepage flow, the paths of equal energy is called: M01
stagnatic pressure
It is the increased pressure developed on impact with the Pitot tube as a result of localized kinetic energy reduction to zero. M97
price current meter, weir formulas, open channel formulas
Name method(s) of measuring stream flow. N95
Position of groundwater table
One of the following foundation conditions does not affect the bearing capacity of the supporting soil N21
1 to 2
Section 302.2.2 of the National Structural Code of the Philippines provides that the slope of cut surfaces shall be no steeper than is safe for intended use and shall be no steeper than _______. M22
Dry density
Soil mass consists of solid particles, water, and air. The combined volume of water and air is called voids and its ratio with the volume of solid particles is called void ratio. The ratio of the mass of solid to the total volume of soil is termed as: N01
Surface tension
The elastic elastic tendency of liquids which makes them acquire the least surface area possible. It is responsible, for example, when an object or insect such as mosquitoes that is denser than water is able to float or run along the water surface. M15
Pascal
The fundamental reference dimensions are mass, length and time. The fundamental SI units for them are kilogram (kg), meter (m), and seconds (s), respectively. The unit of force derived from these units in Newton (N). Consequently, the unit pressure N/m^2 is called: N95
uniform velocity
The hydraulic and energy gradients for a straight pipe and uniform diameter are parallel with each other because of: N98
Pascals
The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. The principle in fluid mechanics is known as: N16
Void ratio
The ratio between the volume of voids and the volume of the soil mass. M15
Degree of saturation
The ratio between the volume of water and the volume of voids: M15
Moisture Content
The ratio between the weight of water and the weight of solid particles. M15
Porosity
The ratio of the volume of voids to the total volume of soil. M17
Porosity
The ratio of the volume of voids to the total volume of the soil is called: M01
Degree of Saturation
The ratio of the volume of water to the volume of voids. M00
Degree of saturation
The ratio of the volume of water to the volume of voids. M17
absolute roughness of the interior surface and diameter
The relative roughness of a pipe is dependent on: N95
Reynolds Number
This is a measure of the relative importance of inertial forces to viscous forces. At sufficient high values, flow becomes turbulent. N95
Tainter gate
Type of gate used for large installations N96
Subcritical
Water flows over a spillway and into a horizontal canal. If the water undergoes a jump, what is the depth of flow after the jump? M00
ratio of inertia forces to surface tension
Weber number is a M97
Safe yield
What is the maximum quantity of water, which can be guaranteed during a critical dry period? M97
chemical oxygen demand
What is the measurement of the amount of oxygen required to stabilize the waste completely? N95
soil moisture
What is the term for capillary water in the smaller pore surface of the soil? N95
Filtration
What method of wastewater treatment method involves removing settleable solids and thickening of sludge? N96
siphon spillway
What spillway of a dam is suited where space is limited? M97
screening
What wastewater treatment that involves the removal of course and settleable solids by interception M97
Continuous
When at any instant, the number of particles passing every section of the stream are always equal, the flow is said to be _______. N19
Turbulent
When the path lines of the individual particles of a flowing liquid are irregular curves and continually cross each other and form a complicated network, the flow is called: M16
