Civil Engineering Quiz 52

1 / 50

The main disadvantage of oxidation pond is that_______?

maintenance and operation cost are high

BOD removal is very low

large area is required for construction

none of the above

2 / 50

Increase in the moisture content in concrete________?

increases the strength

all of the above

reduces the strength

does not change the strength

3 / 50

The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as________?

19 mm

13mm

16mm

10mm

4 / 50

The Saudi Arabian Oil Refinery developed an oil well which is estimated to contain 5,000,000 barrels of oil at an initial cost of $ 50,000,000. What is the depletion charge during the year where it produces half million barrels of oil? Use Unit or Factor method in computing depletion?

$5,010,000.00

$5,050,000.00

$5,025,000.00

$5,000,000.00

5 / 50

The function of king post in a king post roof truss is______?

to support the frame work of the roof

to receive the ends of principal rafter

to prevent the walls from spreading outward

to prevent the tie beam from sagging at its centre

6 / 50

The treadle bar is provided____________?

near and parallel to inner side of both the rails

in the middle of the track a little in front of the toes of the tongue rail

at right angle to the rail

near and parallel to inner side of one of the rails

7 / 50

Rain drops are spherical because of___________?

air resistance

viscosity

surface tension forces

atmospheric pressure

8 / 50

Gypsum consists of_____?

Lime and H20

CaS04 and H20

H2S and C02

C02 and calcium

9 / 50

If the grit in grit chambers is 4.5 million litres per day, its cleaning is done___________?

Mechanically

Electrically

Manually

Hydraulically

10 / 50

The most common cause of acidity in water is______?

carbon dioxide

nitrogen

hydrogen

oxygen

11 / 50

When the axis of load lies in the plane of rivet group, then the rivets are subjected to_______?

only tensile stresses

both (A) and (B)

none of the above

only shear stresses

12 / 50

The minimum recommended diameter of sewers, is________?

10 cm

20 cm

15 cm

5 cm

13 / 50

Different grades are joined together by a _______?

compound curve

transition curve

reverse curve

vertical curve

14 / 50

Normally prestressing wires are arranged in the______?

anywhere

upper part of the beam

lower part of the beam

center

15 / 50

60 R rails are mostly used in_________?

Metre Gauge

Broad Gauge

Narrow Gauge

none of the above

16 / 50

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm?. The pressure at 2.5 m below the oil surface will be __________?

3.5 meters of water column

2 meters of water column

4 m of water column

3 meters of water column

17 / 50

Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ?

error due to wrong adjustment of line of collimation and trunnion axis

error due to displacement of station signals

error due to inaccurate graduation

error due to eccentricity of verniers

18 / 50

Runway threshold is indicated by a series of parallel lines starting from a distance of______?

10 m from runway end

6 m from runway end

15m from runway end

3 m from runway end

19 / 50

Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability_________?

increases by 50%

increases by 33.3%

increases by 25%

decreases by 33.3%

20 / 50

For a floating body to be in stable equilibrium, its metacentre should be________ ?

above the center of gravity

above the center of buoyancy

below the center of buoyancy

below the center of gravity

21 / 50

Loose jaws of steel trough sleepers are made of__________?

cast iron

mild steel

spring steel

cast steel

22 / 50

The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are________?

at right angle and parallel to weir crest

parallel to weir crest in both

at right angle to weir crest in both

parallel and at right angle to weir crest

23 / 50

Free surface of a liquid tends to contract to the smallest possible area due to force of ________?

cohesion

surface tension

friction

viscosity

24 / 50

Assertion Discharging the effluents from the oxidation ponds just up stream of lakes or reservoirs is undesirable. Reason (R) : The discharged algae get settled in the reservoirs and cause anaerobic decomposition and other water qualities________?

Both A and R are true and R is the correct explanation of A

A is true but R is false

Both A and R are true but R is not a correct explanation of A

A is false but R is true

25 / 50

The maximum design gradient for vertical profile of a road is_____?

exceptional gradient

limiting gradient

minimum gradient

ruling gradient

26 / 50

If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to_______?

total hardness ? total alkalinity

non carbonate hardness

total hardness

total alkalinity

27 / 50

Pick up the correct statement from the following?

A pile is a cylindrical body of concrete which transfers the load at a depth greater than its width

A pile is a slender member which transfers its load to the surrounding soil

A pile is a slender member which transfers its load by friction

A pile is a slender member which transfers the load through its lower end on a strong strata

28 / 50

Which one of the following tunnelling methods is used for laying under ground sewers ?

Italian method

Army method

Needle beam method

German method

29 / 50

The general expression for the B.M. of a beam of length l is the beam carries M = (wl/2) x ? (wx?/2)______?

An isolated load at mid span

A load varying linearly from zero at one end to w at the other end

None of these

A uniformly distributed load w/unit length

30 / 50

The radius of gyration of a rectangular section (depth D, width B) from a centroidal axis parallel to the width is_________?

D/2

31 / 50

The most common admixture which is used to accelerate the initial set of concrete is_____?

calcium carbonate

gypsum

calcium chloride

none of the above

32 / 50

Which of the following statements is correct ?

Upper critical Reynolds number is significant in pipe flow problems.

Lower critical Reynolds number has the value 2000 in pipe flow

Lower critical Reynolds number is of no practical significance in pipe flow problems.

Upper critical Reynolds number is the number at which turbulent flow changes to laminar flow

33 / 50

If H is the height of the wave expected, then the height of the breakwater is generally taken as_____________?

1.2 H to 1.25 H above the datum

1.2 H to 1.25 H above the mean sea level

1.2 H to 1.25 H above the high water level

1.2 H to 1.25 H above the low water level

34 / 50

Traps________?

Dissolve the foul gases

Are used to trap the rats entering sewers

Create symphonic action to increase the quick disposal of sewerage

Are water seals which prevent the entry of foul gases

35 / 50

In resources levelling_______?

uniform demand of resources is achieved

cost of project is controlled

total duration of project is increased

total duration of project is reduced

36 / 50

When the degree of saturation is zero, the soil mass under consideration represents_____?

one phase system

two phase system with soil and water

three phase system

two phase system with soil and air

37 / 50

Falling drops of water become spheres due to the property of _______?

cohesion

viscosity

surface tension

adhesion

38 / 50

What is defined as a financial security note issued by business or corporation and by the government as a means of borrowing long-term fund ?

Bank notes

Securities

T-bills

Bond

39 / 50

Differential monometer is used to measure ______________?

very low pressure

difference of pressure between two points

atmospheric pressure

pressure in pipes, channels etc.

40 / 50

The desirable rate of change of cant deficiency in case of Metre Gauge is______?

20 mm/sec

55 mm/sec

35 mm/sec

65 mm/sec

41 / 50

The percentage of filtered water, which is used for backwashing in rapid sand filters, is about_____?

0.4 to 1.0

2 to 4

5 to 7

0.2 to 0.4

42 / 50

Hudson?s formula gives the dead weight of a truss bridge as a function of________?

bottom chord area

top chord area

heaviest axle load of engine

effective span of bridge

43 / 50

The maximum permissible eccentricity for no tension at the base of a gravity dam is_________?

B/4

B/2

B/6

B/3

44 / 50

A loan for P50,000 is to be paid in 3 years at the amount of P65,000. What is the effective rate of money ?

9.14%

9.41%

9.01%

9.31%

45 / 50

All reinforcement should be free from________?

loose rust

paints

All

loose mill scales

46 / 50

Degree of consolidation is_______?

directly proportional to time and inversely proportional to square of drainage path

directly proportional to square of drainage path and inversely proportional to time

directly proportional to drainage path and inversely proportional to time

directly proportional to time and inversely proportional to drainage path

47 / 50

With increase in moisture content, the bulking of sand______?

first decreases to a certain minimum value and then increases

first increases to a certain maximum value and then decreases

increases

decreases

48 / 50

Hume steel pipes are_________?

Steel shell coated from outside with cement mortar

All.

Steel shell coated from inside with cement mortar

Steel pipes

49 / 50

Softening point of bitumen to be used for read construction at a place where maximum temperature is 40? C should be_____?

equal to 40?C

less-than 40?C

greater than 40?C

none of the above

50 / 50

The reduced levels of points, 30 metres apart along the longitudinal section of a road portion between chainages 5 and 9 are shown in the given figure. If there is a uniform up-gradient of the road 120 in 1, the chainage of the point with no filling or cutting is_________?

(6 + 15) chains

(6 + 12) chains

None of these

(6 + 18) chains

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