Civil Engineering Quiz 43

1 / 50

The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about_____?

1.0 to 5.0 ppm

0.05 to 0.5 ppm

0.5 to 1.0 ppm

0.01 to 0.05 ppm

2 / 50

The percentage of voids in cement is approximately______?

80%

40%

60%

25%

3 / 50

Ratio of inertia force to elastic force is known as ____________?

Weber?s number

Reynold?s number

Mach number

Froude number

4 / 50

Barometer is used to measure_________?

very low pressure

pressure in pipes, channels etc.

difference of pressure between two points

atmospheric pressure

5 / 50

Average annual rainfall at any station is the average of annual rainfall over a period of_______?

7 years

35 years

14 years

21 years

6 / 50

The critical combination of stresses for corner region in cement concrete roads is____________?

load stress + warping stress frictional stress

load stress + warping stress

load stress + warping stress + frictional stress

load stress + frictional stress

7 / 50

Froude number is significant in___________?

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship?s hulls

full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.

all of the above

supersonics, as with projectile and jet propulsion

8 / 50

The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is________?

partially combined system

combined system

partially separate system

separate system

9 / 50

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its______?

specific mass

specific density

specific weight

specific gravity

10 / 50

For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is______?

0.6 x 106

0.2 x 106

2.4 xlO6

7.2 xlO6

11 / 50

A foundation rests on______?

Sub-grade

Foundation soil

Base of the foundation

All

12 / 50

Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations ?

measuring angle and distance from one transit station

measuring distance from two points on traverse line

measuring angle at one station and distance from other

measuring angles to the point from at least two stations

13 / 50

Stream lines and path lines always coincide in case of_________?

uniform flow

steady flow

turbulent flow

laminar flow

14 / 50

Steel tanks are mainly designed for______________?

wind pressure

water pressure

weight of tank

earthquake forces

15 / 50

The ratio of absolute viscosity to mass density is known as___________?

coefficient of viscosity

specific viscosity

viscosity index

kinematic viscosity

16 / 50

As per ICAO, the minimum basic runway length for A and E type of airport will be_______?

2100 m and 600 m

2100 m and 750 m

1500 m and 600 m

1500 m and 750 m

17 / 50

Flow of water in a pipe about 3 meters in diameter can be measured by________?

venturi

rotameter

pitot tube

orifice plate

18 / 50

The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is__________?

1.5

19 / 50

The expected out turn of 2.5 cm cement concrete floor per mansion per day_________?

10 sqm

2.5 sqm

5.0 sqm

7.5 sqm

20 / 50

Aggregation of individuals formed for the purpose of conducting a business and recognized by law as a fictitious person is called _______________?

Investors

Partnership

Corporation

Stockholders

21 / 50

The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is_______?

equal to 1

equal to zero

less than 1

greater than 1

22 / 50

The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called_____?

Proof resilience

Stiffness

Proof stress

Proof load

23 / 50

Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be_______?

nil

24 / 50

Water content of sewage is about__________?

9.90%

95%

90%

99%

25 / 50

No treatment of the sewage is given if dilution factor is_____________?

Less than 150

More than 500

Between 150 to 200

Between 200 to 300

26 / 50

Which one of the following tests is used for testing sewer pipes ?

Water test

Ball test

All

Mirror test

27 / 50

The horizontal thrust on the ends of a two hinged semicircular arch of radius carrying________?

non of these

end, is

A uniforml 4/3

All

28 / 50

When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is_______?

elliptical

turbine

circular

tangent

29 / 50

The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient of the embankment is 1 in 150, the quantity of the earthwork calculated by Prismoidal formula, is___________?

3225 m3

3250 m3

3300 m3

3275 m3

30 / 50

The value of mass density in kgsecVm4 for water at 0?C is______?

1000

100

101.9

31 / 50

As compared to field rivets, the shop rivets are_______?

equally strong

stronger

any of the above

weaker

32 / 50

The item of the brick structure measured in sq.m, is__________?

Broken glass coping

Brick edging

Reinforced brick work

Brick work in arches

33 / 50

Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than_________?

42 MPa and 35 MPa

42 MPa and 53 MPa

53 MPa and 42 MPa

35 MPa and 42 MPa

34 / 50

For a flood control reservoir, the effective storage is equal to______?

useful storage + surcharge storage

useful storage + surcharge storage + valley storage

useful storage ? valley storage

useful storage + surcharge storage -valley storage

35 / 50

In SI units the power of sound is represented in _________?

Newtons

Joules

Watts

Kgs

36 / 50

Principle of superposition is applicable when__________?

deflections are linear functions of applied forces

none of the above

material obeys Hooke?s law

the action of applied forces will be affected by small deformations of the structure

37 / 50

Normal depth in open channel flow is the depth of flow corresponding to______?

uniform flow

laminar flow

unsteady flow

steady flow

38 / 50

The design period of sewage treatment works in normally________?

15 ? 20 years

40 ? 50 years

5 ? 10 years

30 ? 40 years

39 / 50

The most suitable type of equipment for compaction of cohesive soils is________?

Tampers

Sheep foot rollers

Vibratory rollers

Smooth-wheeled rollers

40 / 50

If the depth of actual neutral axis of a doubly reinforced beam_____?

All

Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier

Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier

Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously

41 / 50

The live load for a sloping roof with slope 15?, where access is not provided to roof, is taken as______?

0.75 kN/m2

0.65 kN/m2

1.35 kN/m2

1.50 kN/m2

42 / 50

Which of the following statements is incorrect ?

Spacing of longitudinal bars measured along the periphery of column should not exceed 300 mm

Minimum cross sectional area of longitudinal reinforcement in a column is 0.8%

Reinforcing bars in a column should not be less than 12 mm in diameter

The number of longitudinal bars provided in a circular column should not be less than four

43 / 50

The average permissible stress in bond for plain bars in tension is______?

increased by 10% for bars in compression

decreased by 25% for bars in compression

decreased by 10% for bars in compression

increased by 25% for bars in compression

44 / 50

If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre -stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is______?

P/2A

2A/P

A/P

P/A

45 / 50

In a colar beam roof______?

there are two horizontal ties, one at the feet and other at the middle of the rafters

there is a horizontal tie at almost the middle of rafters only

there is a horizontal tie at the feet of rafters only

there is no horizontal tie beam

46 / 50

It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f. If the maximum velocity during the oscillation is V, then V must be proportional to________?

1/f

1/f2

47 / 50

Assertion A : Shishum is used for decorative woodwork. Reason R : Shishum can be polished to an excellent finish. Select your answer according to the coding system given below ?

A is false but R is true

A is true but R is false

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

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

48 / 50

A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed The ratio of the vertical to horizontal deflections of the end A, is_____?

49 / 50

The transition curve used in the horizontal alignment of highways as per IRC recommendations is______?

lemniscate

cubic parabola

any of the above

spiral

50 / 50

Pick up the correct statement from the following?

In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area

In a loaded beam, the moment at which the first yield occurs is called yield moment

All

In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment

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