Download PE Civil Water Resources Exam Questions and Answers and more Exams Advanced Education in PDF only on Docsity!
PE Civil Water Resources Exam
Questions and Answers
retention potential - ANSWER-Which of the following parameters is not required in Rational Method in estimating peak flow? a) drainage area b) retention potential c) time of concentration d) runoff D) amount, duration, intensity and distribution - ANSWER-The rainfall at any place may be described by a) it's duration b) it's intensity c) distribution d) all of the above depth, duration and frequency IDF curves are plots of rainfall intensity (or depth) versus duration of event rainfall for different frequencies - ANSWER-intensity-duration- frequency curves relate to rainfall excess (the portion of total runoff thn comes from overland flow - ANSWER- direct runoff hydrograph is the result of abstraction Loss = P-Q or Q=P-Loss where Q is runoff depth (in) and P is precipitation (in) - ANSWER-rainfall excess is equal to the total rainfall minus the: a) initial abstraction b)abstraction c) infiltration d) effective rainfall all of the above - ANSWER-gauging station monitor the following parameter of water bodies: a) stage b) discharge c) water chemistry d) all of the above current meter - ANSWER-which is not a method for measuring stream discharge? a) area velocity method b) flow measuring structure
c) current meter d) salt concentration method all of the above - ANSWER-abstraction include which of the following? a) interception b)infiltration c) depression storage d) all of the above the average rainfall intensity (or depth) above which the volume of rainfall excess equals the volume of direct runoff - ANSWER-phi index equals unconfined aquifer - ANSWER-an aquifer that is underlain by an impermeable layer and open to the atmosphere at the top is called: Increase. High temperature will decrease the viscosity - ANSWER-if the temperature of water increase, the hydraulic conductivity of the soil will specific yield - ANSWER-what is the quantity of water that a unit volume of aquifer drains by gravity called? seepage velocity - ANSWER-the actual velocity of water through the void spaces of soil is called the ability of soil to allow water to pass through - ANSWER-permeability refers to which of the following statements a) fluid characteristics b) pore size - ANSWER-hydraulic conductivity is a function of: A) fluid characteristics B) pore size C) water table depth d) duration of the pumping e) none of the above shorter than that of a confined aquifer - ANSWER-a piezometer located in an unconfined aquifer is monitored on a monthly basis, the response time associated with rainfall precipitation in an unconfined aquifer, in general, is considered to be laminar flow - ANSWER-in which of the following flow regimes, does the discharge velocity bear a linear relationship to the hydraulic gradient? dupuit equation - ANSWER-which equation would you use to calculate the flow rate of water drawn from a well?
A ---Geotextiles are made of polymer tapes, monofilament fibers, or fibrillated yarns and have various strength, stiffness, and drainage properties. Geogrids are polymer grid mats that usually have high strength and stiffness and are used primarily for soil reinforcement. Geonets are commonly used for drainage purposes and are not primarily used for reinforcing soil. Geomembranes are primarily used as a liner or barrier to control fluid penetration. - ANSWER-Which of the following geosynthetics are typically used for soil stabilization? (I) Geotextiles (II) Geogrids (III) Geonets (IV) Geomembranes A.I and II B.I, II, and III C.I, II, and IV D.All of the above A- Applied moment on a beam does not affect the shear diagram, only the moment diagram. The vertical change in moment diagram will be the same as the value of applied moment. - ANSWER-When a concentrated moment is applied on a beam: A.a vertical change in the moment diagram results. B.a vertical change in the shear diagram results. C.there is no change in the moment diagram. D.None of the above According to the "Nondestructive Test Methods for Concrete" table in the NCEES PE Civil Reference Handbook internal defects can be identified by impact-echo, ultrasonic echo, and impulse response. Therefore, A and E are correct. - ANSWER-After the placement of a reinforced concrete wall in a commercial building, the owner suspects internal defects in the structural element due to the low slump of concrete (2 in) and wants to examine this possibility. No damage to the structure is allowed by the engineer. Which test method(s) can be used to identify the potential internal defects? Select all that apply. A.Impact-echo B.Sounding C.InfrarEd thermography D.GPR E.Impulse response D.I, II, & IV - ANSWER-An engineer wants to design an extremely strong concrete beam. Which of the following could he/she do? I) Install rebar or fiber reinforcement. II) Include fly ash as an admixture along with cement, fine and coarse aggregates. III) Add more water. IV) Use high strength cement.
A.IV
B.I & II
C.I & III
D.I, II, & IV
If one inch of excess rainfall produces a direct runoff peak of 45 cfs, then two inches of excess rainfall produce a direct runoff of 2 x 45 = 90 cfs. - ANSWER-A unit hydrograph is a direct runoff hydrograph resulting from one unit (1 in or 1 cm) of constant intensity uniform rainfall occurring over the entire watershed. If one inch of excess rainfall produces a direct runoff peak of 45 cfs, two inches of excess rainfall produce a direct runoff peak of what? A.Less than 45 cfs B.45 cfs C.Greater than 45 cfs D.None of the above The contractor does not make profit. - ANSWER-A contractor finds their cost performance index (CPI) for a certain project is less than one. This means: A.the project is behind schedule. B.the project is on schedule. C.the project is under budget. D.the contractor is not making profit. B.to reduce the duration of the activity by allotting more resources for this activity. - ANSWER-The crashing of an activity during a project means: Ato eliminate the activity from the project. B.to reduce the duration of the activity by allotting more resources for this activity. C.to combine the activity with another activity. D.to delay the activity until all other activities have been completed. B.Coordinate Method - ANSWER-Which of the following is not a method used for calculating earthwork quantities? A.End Area Method B.Coordinate Method C.Average Stationing Method D.Borrow Grid Method B.clearwell. - ANSWER-The discharge from filters flows into a storage reservoir also called a: A.loading zone. B.clearwell. C.cleaning tank. D.ultrafiltration area. A.Incineration is the most common due to maximum waste elimination. - ANSWER- Which of the following statements regarding sludge disposal is not true?
A.Input: material that enters through system boundaries B.Generation: Produced within system boundaries C.Output: Leaves through system boundaries D.Accumulation: Buildup outside system A, B, and D are all explicitly stated as factors when considering the location of wastewater treatment ponds. Option C is not mentioned as a consideration - therefore it is the correct answer. - ANSWER-Which of the following is not true when determining the best location for a wastewater treatment pond? A.The location must ensure that there is adequate diversion of stormwater runoff B.The location must ensure that the separation between the base of the pond and groundwater elevation is at least 4 feet C.The base of the pond should maintain a slope of at least 1% from the perimeter to the center for drainage purposes D.The base of the pond should maintain a minimum distance of 10 feet to the nearest bedrock Friction ---Minor losses are defined as those "caused by turbulence resulting from changes in flow geometry." All of the above are changes in flow geometry except friction. Friction is its own type of loss that is calculated using a separate equation and method. - ANSWER-Which of the following is not a minor loss? A.Enlargements B.Bends C.Fittings D.Friction B.Thermophilogenesis There are four stages of anaerobic digestion: hydrolysis, acidogenesis, acetogenesis, and methanogenesis. - ANSWER-Which of the following is not a stage in the process of anaerobic digestion? A.Hydrolysis B.Thermophilogenesis C.Acidogenesis D.Methanogenesis 1)the discharge through each pipe is added to obtain total discharge
- the head loss is the same through each pipe - ANSWER-which of the following is (are) true about parallel pipe network?
