30 Questions
What is a line on a weather map connecting points of equal atmospheric pressure called?
Isobar
Which soil test involves pouring a fully saturated soil into a mold with a first mold in line with vaseline?
Moisture-Density Test
Which component has the greatest quantity in dry air?
Nitrogen
Which of the following devices regulates the distribution of water flow?
Sluice valve
Which water treatment process is helpful in reducing the incidence of dental caries in children?
Fluoridation
Which statement about buoyancy is true?
Buoyant force on any body is equal to the fluid displaced
What is the term used for the ratio of the mass of solid to the total volume of soil?
Moist Unit Weight
In waste water treatment, what is the process known as that involves removing fine residual suspended solids?
Filtration
What is the term for the ratio of the volume of voids to the total volume of the soil?
Void Ratio
In flow net construction for determining seepage flow, what are the paths of equal energy called?
Equipotential Lines
What is the pressure head at the summit of the siphon, considering the datum line at the discharge end and neglecting head loss?
The negative value of the Elevation Head
Which of the following terms denotes the temperature that is the average of the monthly means for the year?
Mean Annual Temperature
Given a fluid flowing through a pipe with a kinematic viscosity of 15x10^(-7) sq.m/s, a velocity of 0.8 m/s, what type of flow is it?
Laminar
What is a system of streamline and orthogonal lines that shows the idealized flow pattern for a given system of boundaries?
Flow Net
What is the term used for the ratio of the total mass to the total volume of solids in soil properties?
Bulk Unit Weight
In pipe flow, when applying the Bernoulli equation from one section (upstream side) to another section (downstream side), the total energy on the downstream side is expressed as:
The sum of the pressure head, the velocity head, the elevation head, plus the total head loss
Water that flows from the atmosphere to the earth's surface in any variety of forms is known as:
Precipitation
What term is used to describe the idealized flow pattern for a given system of boundaries, represented by a system of streamline and orthogonal lines?
Flow Net
According to Section 302.2.2 of the National Structural Code of the Philippines, what is the maximum allowable slope for cut surfaces?
1 horizontal to 1 vertical
In the Unified Soils Classification, soils are considered coarse-grained if the percentage passing the No. 200 sieve is less than:
50%
Which of the following does NOT affect foundation settlement?
None of the other choices
The process by which water-saturated soil sediment temporarily loses strength and acts as a fluid is known as:
Liquefaction
The principle of buoyancy, which states that a body placed in a liquid is buoyed up by a force equal to the weight of the displaced liquid, is attributed to:
Archimedes
If the average velocity at every cross-section of a stream is the same for a given length or reach, the flow is said to be:
Uniform
When the metacenter (M) is below the center of gravity (CG) of a floating body, what is the resulting equilibrium state?
Stable equilibrium
What is the dimensionless number that represents the ratio of inertia forces to pressure forces?
Reynolds Number
Which mechanical device, when installed in a pipe, extracts energy from the system?
Turbine
What term denotes the temperature range between the highest and lowest temperature recorded for a particular day?
Daily range in temperature
Which equation correctly represents the weight of a fluid body, defined as the earth's gravitational pull on the body?
Product of the mass of the body (M) and the gravitational force (g)
Which of the following is NOT a dimensionless number or parameter in fluid mechanics?
Euler's Number
Test your knowledge of the National Structural Code of the Philippines with questions on slope requirements for cut surfaces, soil classification, and foundation settlement factors.
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