Civil Engineering Quiz 41

1 / 50

The least thickness of class B cast iron (spun) pipe, is________?

7.9 mm

7.2 mm

10 mm

8.6 mm

2 / 50

The resultant upward pressure of the fluid on an immersed body is called________?

center of pressure

All are correct

upthrust

buoyancy

3 / 50

The force in AC of the truss shown in the given figure, is________?

4t tension

4t compression

5t compression

5t tension

4 / 50

An R.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is______?

8.3 kg/cm2

7.6 kg/cm2

21.5 kg/cm 2

11.4 kg/cm2

5 / 50

While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of_________?

none of the above

infinite length

zero length

zero moment of inertia

6 / 50

The mode of failure of a very short masonry member having h/t ratio of less than 4 is by ______?

vertical tensile splitting

any of the above

buckling

shear

7 / 50

Which of the following instrument can be used for measuring speed of an aeroplane _______?

Venturimeter

hot wire anemometer

pitot tube

Orifice plate

8 / 50

Electromagnetic radiation______?

Produces a time varying magnetic field and vice versa

All

Is capable to travel across space

Once generated, remains self-propagating

9 / 50

If the staff is not held vertical at a level?ling station, the reduced level calculated from the observation would be______?

more than true R.L

none of the above

true R.L

less than true R.L

10 / 50

Asbestos pipes are _____?

light in weight and easy to transport

highly resistant to corrosion

high flexible to accommodate deflection upto 12?

All

11 / 50

If the monthly mean of average daily temperature for the hottest month of the year is 25? C and the monthly mean of the maximum daily temperature of the same month of the year is 46? C, the airport reference temperature is___________?

25?C

35.5?C

48?C

32?C

12 / 50

Reaction time of a driver______?

decreases with increase in speed

increases with increase in speed

is same for all speeds

none of the above

13 / 50

For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is______?

dependent on relative roughness only

a function of Reynolds number and relative roughness

dependent only on Reynolds number

constant

14 / 50

The force in BF of the truss shown in given figure, is______?

4.5t compression

4t tension

4.5t tension

4t compression

15 / 50

If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, Is____________?

1.350 D

1.625 D

1.250 D

1.425 D

16 / 50

Which one of the following statements is not correct________?

the tangent of the angle of repose is equal to coefficient of friction

the sine of the angle of repose is equal to coefficient to friction

the tangent of the angle of friction is equal to coefficient of friction

the angle of repose is equal to angle of friction

17 / 50

In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively____________?

75 and 50

75 and 75

50 and 75

50 and 50

18 / 50

The C.G. of a solid hemisphere lies on the central radius 3r______?

at distance ? from the plane base 3r

at distance ? from the plane base or

at distance ? from the plane base 3r

19 / 50

The brick work is not measured in cu m in case of______?

Brick work in arches

Half brick wall

Reinforced brick work

One or more than one brick wall

20 / 50

In series-pipe problems______?

the discharge is same through each pipe

a trial solution is not necessary

the head loss is same through each pipe

the discharge through each pipe is added to obtain total discharge

21 / 50

A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistence of 30 kg per tonne. If this tractor is operated on a level road having a rolling resistance of 40 kg per tonne, then the drawbar pull of the tractor will_______?

reduce by 200 kg

reduce by 250 kg

increase by 200 kg

increase by 250 kg

22 / 50

The two important forces for a floating body are__________?

inertial, gravity

buoyancy, gravity

buoyancy, pressure

buoyancy, inertial

23 / 50

Bending moment at any section in a conjugate beam gives in the actual beam________?

curvature

deflection

bending moment

slope

24 / 50

The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as_____?

hip

gable

ridge

eaves

25 / 50

Admixtures which cause early setting, and hardening of concrete are called______?

workability admixtures

accelerators

air entraining agents

retarders

26 / 50

Which of the following is a fixed type mooring accessory ?

buoys

bollard

cables

anchors

27 / 50

Which is NOT an essential element of an ordinary annuity ?

Compound interest is paid on all amounts in the annuity.

The first payment is made at the beginning of the first period.

The amounts of all payments are equal.

The payments are made at equal interval of time.

28 / 50

The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is___________?

30 m

45 m

20 m

75 m

29 / 50

What is the change in cost per unit variable change called ?

Fixed cost

Incremental cost

Supplemental cost

Variable cost

30 / 50

Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about______?

10 to 25

100

31 / 50

Stress strain curve of high tensile steel______?

does not show definite yield point but yield point is defined by 2% proof stress

has a definite yield point

does not show definite yield point but yield point is defined by 0.2% proof stress

does not show definite yield point but yield point is defined by 0.1% proof stress

32 / 50

What are the two classifications of goods and services ?

Consumer and producer

Raw and finished

Ready-made and made-to-order

Local and imported

33 / 50

Hydrodynamic pressure due to earthquake acts at a height of________?

3H747t below the water surface

4H737t below the water surface where H is the depth of water

4H/371 above the base

3H/47I above the base

34 / 50

Pick up the correct statement from the following?

The water supply pipes get clogged if flow velocity is less than self cleansing velocity

The sewers may be carried up and down the hills and valleys

The sewer pipes are generally laid along level hills

The water supply pipes carry pure water free from solid particles

35 / 50

Mr. Bacani borrowed money from the bank. He received from the bank P1,842 and promised to repay P2,000 at the end of 10 months. Determine the rate of simple interest?

11.54%

12.03%

10.29%

12.19%

36 / 50

When two equally important roads cross roughly at right angles, the suitable shape of central island is_______?

tangent

elliptical

turbine

circular

37 / 50

Alkalinity in water is expressed as milli-grams per litre in terms of equivalent______?

sodium carbonate

magnesium carbonate

calcium carbonate

calcium hydroxide

38 / 50

If the flame of a miner?s safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains______?

Methane

Carbon dioxide

Oxygen

Hydrogen sulphide

39 / 50

Efficiency of a riveted joint, having the minimum pitch as per IS : 800, is________?

50%

60%

40%

70%

40 / 50

parabolic arch of span and rise , is given by The equation of a_______?

y = 3h/l? ? (1 ? x)

y = 2h/l? ? (1 ? x)

y = 4h/l? ? (1 ? x)

y = h/l? ? (1 ? x )

41 / 50

Depth or height of the arch is the_______?

perpendicular distance between springing line and extrados

vertical distance between springing line and intrados

perpendicular distance between intra-dos and extrados

none of the above

42 / 50

Relative density of a compacted dense sand is approximately equal to_____________?

0.4

0.6

0.95

1.2

43 / 50

A compound bar consists of two bars of equal length. Steel bar cross -section is 3500 mm2and that of brass bar is 3000 mm2. These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm2 and Eb = 0.1 MN/mm2, the stresses developed are__________?

b = 5 N/mm2 s = 10 N/mm2

b = 10 N/mm2 s = 20 N/mm 2

b = 6 N/mm2 s = 12 N/mm2

b = 8 N/mm2 s = 16 N/mm2

44 / 50

The flow back of profit plus depreciation form a given project is called __________?

Capital recovery

Economic return

Earning value

Cash flow

45 / 50

If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20?C, B.O.D of the sewage is________?

150 mg/l

100 mg/l

50 mg/l

250 mg/l

46 / 50

Pick up the correct statement from the following ?

All

Permeability is expressed as the ratio of the magnetic flux density to the field strength of the magnetizing field

Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium

Permeability is a measure of conducting the magnetic lines of force in the material

47 / 50

In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as_______?

two-third of the sum of thickness of both the leaves

actual thickness of the stronger leaf

larger of (B) and (C)

sum of thickness of both leaves

48 / 50

Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation ?

independent of shape of water surface

flat water surface

concave water surface

convex water surface

49 / 50

What type of bond where the corporation?s owner name are recorded and the interest is paid periodically to the owners with their asking for it ?

Preferred bond

Callable bond

Incorporators bond

Registered bond

50 / 50

When the speed of traffic flow becomes zero,then______?

traffic density attains maximum value whereas traffic volume becomes zero

traffic density becomes zero whereas traffic volume attains maximum value

traffic density and traffic volume both attain maximum value

traffic density and traffic volume both become zero

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