Civil Engineering Past Boards (2022)

17.36 m3/s

A discharge canal in the shape of trapezoid has a bottom width of 2.0m and the depth of l-horizontal to 1.732 vertical. compute rhe discharge when the depth flow is 3m. Let n= 0.015 and s=0.0004.

17.36 m^3/s

A discharge canal in the shape of trapezoid has a bottom width of 2.0m and the depth of l-horizontal to 1.732 vertical. compute rhe discharge when the depth flow is 3m. Let n= 0.015 and s=0.0004.

isobar

A line on weather map connecting points of equal atmospheric pressure is called?

230m

A 270m long train running at the speed of 120 kmph crosses another train running in opposite direction at the speed of 80kmph in 9 seconds. What id the length of the other train?

0.749

A 480 cc soil sample weighs 850.5 grams. After oven drying, it weighed 594.4 grams. If the specific gravity of solids is 2.71, determine the degree of saturation of the soils

28.40

A car moving at 36 m/s decelerates uniformly at 450 meter/minute/second. How far, in meters, has the car moved when its velocity is 30 m/second?

64 WR^3n/ Cd^3

A close-coiled helical spring with n coils, mean radius and diameter d is subjected to an axial load W. What is the compression in the spring?

14.4 %

A credit card offers 1.2 % effective monthly interest. What is the effective annual rate with monthly compounding?

d. all of these

works costing less than php 250,000.00 are treated as __________. a. major project b. minor project c. projects d. all of these

0.44 mm

A mild steel bar of square cross-section 40mmx40mm is 400mm long, It is subjected to a longitudinal tensile stress of 400 N/m and a lateral compressive stress is 200N/mm in perpendicular directions. E=2x10^-5 N/mm, I=0.3. what is the approximate elongation of that bar in the longitudinal directions?

11.32

A pipe having a diameter of 2 feet with roughness coefficient of 0.013 flows full. If the slope of the energy grade line is 0.0025, determine the discharge on cfs.

19.57 cm2

A regular hexagon with an area of 93.53 square centimieters is inscribe in a circle. What area in the circle not covered by an hexagon?

47.5

A small line truck hauls poles from a substation stockyard to pole sites along a proposed distribution line. The truck can handle nly one pole at a time. the first pole is 150m from the substation and the poles are to be 50m apart. Determine the total distance travelled by the line truck back and forth, after returning from delivering the 30th pole.

150N

A stone weighs 500N in air and 350N in a liquid having a specific gravity of 0.86. determine the bouyant force.

tangent line

A straight line tangent to a level surface is

3m

A trapezoidal canal with sides making an angle of 35 degrees to the horizontal has a base width of 6m. The channel is laid on a slope of 0.002 with n=0.0013. For the discharge of 75 cu.m/sec. Complete the normal depth?

250m

A vertical parabolic sag curve has tangent grades of -1.2% and +0.68. If the garde changes uniformly at 0.18 % per 20m, find the length of the curve

element

Air is a/an______

Rather low tensile strength

Aluminum as a material of construction suffers from the disadvantage of _________

Metalloid

An element, which exhibits the properties of both metal and non metal

74.33 1/2

Angle C=90 I in s right spherical triangle ABC. If c=80 I and a=50 I, find b in degrees. use Napier's circle equation: C as the middle part sin C = cos a x cos b cos c = cos a x cos b

remains unchanged

As the impurities are oxidised, the melting point of iron __________

pressure in water channels, pipes, etc.

Barometers are used to measure ___________

4,3,2,1

Consider the following strengths of concrete: 1. cube strength 2. cylinder strength 3. split-tensile strength 4. modulus of rupture the correct sequence in decreasing order of these strength is:

3.5355

Determine the distance from (5,10) to the line x-y = 0. The absolute value equation: d= Ax1+By1+C/ (all over) (A + B)

4/(1-16x2)0.5

Find the first derivative of y = arc cos 4x

1.33%

From station 0 + 040 with centre height of 1.2m in fill, the groud line makes a uniform slope of 6.5 % to station 0 + 100 whose center height in cut is 3,5. Find the grade of the finished roadway.

55.8 sec

From the speed of 20 mph a train accelerated at a rate of 0.395 m/s2. How many seconds will it take the train to travel on one km during the acceleration?

hydrochloric acid

How will be the graphite corroded?

B=0.33H+d

If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the Trapezoidal crest, is given by _________

at the end of reinforcing bar, not less than 25 mm or twice the diameter of the bar

In estimating a reinforced cement structure, the omitted cover of concrete is assumed ________

Fb = 0.40Fy

In general, tension and compression on extreme fibers of compact or roller or built up members, symmetrical about and loaded in the plane of their minor axis is:

always below the groud level

In gravity canals, F.S.L. is ______

0.0684 m/s

In hydrographic survey using a current meter with the meter constant a = 0.232 and h = 0.022 required to determine the velocity of the water at the time of obsercation was recorded to last 5 sec. and the recorded number of revolution is taken as 10. calculate the velocity flow.

9

It takes Mike twice as long as is takes Patrick to do a certain job, working together, they can do the work 6 days. How long would it take Patrick to do it alone?

2

Mar bought 24 boxes of tiles for 2,200.00 there were three types of tiles bought. Tiles for stairs cost P300.00 per boxes. Tiles for floor cost for 150 and tiles for bath cost 50.00 per box. How many boxes of tiles for the stairs he needs to buy?

Possession by permission of the record owner cannot ripen into adverse possession

Mr. Rabonza engaged a surveyor to skate the boundary of a parcel land. He told the surveyor that he had adversely possessd the parcel for the past 11 years. The surveyor asked him if he had occupied the land under color of title of Mr. Rabonza was in his property and gave him permission to be there? what should the surveyor tell Mr. Rabonza?

a. no suction force due to water returning after striking

On the sea shore structures, the result of a water water wave impact is caused by EXCEPT: a. no suction force due to water returning after striking b. direct compressive force due to deflected vertical force c. shear force due to deflected vertical force d. compressive force due to collapse of the wave

0.001 cu m

One liter of water occupies a volume of _________

plane table

One of the oldest type of surveying instrument in the field mapping, consist of a board attached to a tripod in such a way that it can leveled or rotated in any desired direction is __________

56 mph

Patrick is travelling to a meeting that is 28 miles away. he needs to be there in 30

d. all of these

Pick up the correct statement from the following: a. capillary moisture held in the soil pores against gravity by surface tension, it utilizes by plants b. gravity water is harmful to crops c. hygroscopic water remains attached to soil molecules by chemical bond d. all of these

a. in case the ground slope is less than the required bed slope, the silt factor must be reduced by permitting the entry of coarse silt

Pick up the correct statement from the following: a. in case the ground slope is less than the required bed slope, the silt factor must be reduced by permitting the entry of coarse silt b. according to Lacey, regime conditions require a particular slope for a given discharge and silt factor c. the full supply level of a canal should be above ground level d. zero

a. standing on the tripod is the evelling head or trib arch

Pick up the correct statement from the following: a. standing on the tripod is the levelling head or trib arch b. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical c. the tangent xcrew snables to give small movement under conditions of smooth and positive control

259.3

Point A and B are 100m apart and are on the same elevation as the foot of a building. The angles of elevation of the top of the building from point A and B are 21 1/2 and 32 1/2 respectively. How far is A from the building in m? use sine law.

P750

Ratio costs a table and a chair is 5:3. If the table costs P500.00 more than the cost of chairs, what is the chair's cost?

instructions by the executive engineers

Site order book is used for recording ________

wear resistance

The addition of antimony in tin-based alloys improves its _______

1067N

The allowable load in shear for an 8.5mm weld having an allowable shearig strenght of 124 MPa for a total length of 306 mm is about ________

180.13

The base edge of a regular triangle pyramid is 12m. If the altitude is 9m. What is the volume in cu.m?

Nominal size

The commercial size designation of width and depth, in standard sawn lumber and glued laminated lumber grades somewhat larger than the standard net size

five lacs

The cost of a project is more than ______

F.S.L. of the canal

The crest level of a canal diversion head work, depends upon ___________

8970

The difference between the compound interest and the simple interest on a certain sum at 12% p.a. for two years is Php90. What will be the value of the amount at the end of 3 years?

bollard

The floating mooring does NOT require __________

1.0 mm

The gap between web plates and flange plates for fillets welds should not be moe than

47.88 N/m

The intensity of pressure at a certain place is 1 kg (f)/m, the intensity of pressure in SI units will be?

to control floods

The main function of a diversion head works of a canal from a river, is

Activity

The perfromance of a specific tank in CPM, is known as

hydraulic jump

The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid

negative gauge pressure

The pressure less than atmospheric pressure is known as

Desiccation

The property of substance that absorbs moisture from the air on exposure

50m

The radius of curvature of the arc of the bubble tube is generally kept _________

both viscosity and surface tension are increased

The sensitivenes of a level tube decrease if

0.375 cm

The slope correlation for a length of 30m along a gradient of 1 to 20 is?

50 HP

The time required for an elevator to lift a weight varies directly with the weight and distance through which it is lifted an inversely as the power of the motor. IF it tales 30 sec for the 10 HP motor to lift 100 lbs through a 50 ft, what size of motor is required to lift 800 lbs in 40 sec through a 40 ft.

12 and 25

Two natural numbers are such that the difference of their squares is 481 and the sum of their squares 769. Find the numbers.

675mm

Two pipes 1 and 2 having the following properties are connected in series. Pipe 1: length=1500m, diameter=850mm, and f=0.025. Pipe 2: length=1200m, diamtere=650mm, and f=0.020. It is required to replace these two pipes with a single pipe whose lenght is 2700. Assuming that the friction factor for new pip is 0.015, what is the required diameter?

both linearity and time variance

Viewing watershed as system, which one of the following assumptions is made in the unit graph theory?

Chromium steels

What alloy steels has the energy saving properties making it suitable for use in electrical machines?

Iron, Brass, Tin

What are the ingredients of gun metal?

10 sq.m

What is the expected turn out of 12mm plastering with cement mortar?

Zenith

What is the point where vertical produced upward pierces the celestial sphere?

brick work in arches

What item of the brick structure measured in sq. m

plane surveying

What type of surveying in which the earth is considered to be a flat surface and the exact shape of the earth is disregarded?

to fill up a tank with water at higher level from a lower level

Where is a siphon used?

free float

Which activity completion time can be delayed without affecting the start of succeeding activities, is known as _____