Civil Engineering Quiz 40

1 / 50

If ?A? is the angle formed by two gauge faces, the crossing number will be___________?

sec A

tan A

Arad

cot A

2 / 50

If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by_______?

D = 0.00775 aP

D = 0.07775 aP

D = 0.0775 aP

D = 0.775 Pa

3 / 50

Valid range for S, the degree of saturation of soil in percentage is_____?

0<S<100

S>0

0 < S < 100

S<0

4 / 50

The runoff increases with_______?

increase in permeability of soil

all of the above

increase in intensity of rain

increase in infiltration capacity

5 / 50

For testing compressive strength of cement, the size of cube used is______?

100 mm

50 mm

150 mm

70.6 mm

6 / 50

What estimate would you give for the variance in above problem ?

7 / 50

In the zone of R.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of_______?

One -half lever arm of the section

One-third lever arm of the section

Lever arm of the section

One and half lever arm of the section

8 / 50

If the R.L?s of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be_______?

superpassage

syphon

syphon aqueduct

aqueduct

9 / 50

Which of the following is an incorrect statement ?

Flow nozzle is cheaper than venturimeter but has higher energy loss

Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined

None of the above statement is correct.

Coefficient of contraction of a venturimeter is unity

10 / 50

A single force and a couple acting in the same plane upon a rigid body_______?

balance each other

cannot balance each other

produce moment of a couple

are equivalent

11 / 50

If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress fs the ratio of inner diameter to outer diameter, is 17/64 (f /N)s_________?

4-Jan

5-Jan

3-Jan

2-Jan

12 / 50

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by_________?

m + r + 2j

m ? r + 2j

m + r ? 3j

m + r ? 2j

13 / 50

Dry weather flow is_________?

Average annual rate of flow

Average daily rate of flow

Average monthly rate of flow

Water supply allowance per capita

14 / 50

A simple pendulum of length 1 has an energy E when its amplitude is If its amplitude is increased to 2 A, the energy becomes___________?

E/2

15 / 50

The slope of sewer shall be_________?

given in the direction opposite to natural slope of ground

steeper than 1 in 20

given in the direction of natural slope of ground

zero

16 / 50

The relation between modulus of rupture fcr, splitting strength fcs and direct tensile strength fcl is given by______?

fc5>fcr>fC

fcr<fcs

fcr>fcs>fc

tcr ? rcs = tct

17 / 50

Fresh sewage may become stale in________?

One hour

Six hours

Three to four hours

Two to three hours

18 / 50

Dimensions of a beam need be changed if the shear stress is more than______?

15 kg/cm2

25 kg/cm2

20 kg/cm2

10 kg/cm2

19 / 50

The anchorage value of standard U-type hook of a reinforcing bar of diameter d in tension, is_____?

4 d

16 d

12 d

20 / 50

Assertion A.: A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R): It helps to accommodate the scum in the septic tank________?

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

A is false but R is true

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

A is true but R is false

21 / 50

Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?

moving boat method

ultra-sonic method

area-velocity method

slope-area method

22 / 50

An association of two or more persons for the purpose of engaging into a business for profit is called ___________?

Entrepreneurship

Proprietorship

Partnership

Corporation

23 / 50

The Chezy?s constant C in the formula V = C________?

Shape of the sewer

All

Roughness of sewer surface

Size of the sewer

24 / 50

As compared to geometrical increase method of forecasting population, arithmetical increase method gives_______?

accurate value

same value

lesser value

higher value

25 / 50

The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is________?

26 / 50

When semaphore and warner are installed on the same post, then the stop indication is given when__________?

both semaphore and warner arms lowered

both arms are horizontal

semaphore arm lowered but warner arm horizontal

none of the above

27 / 50

Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena_______?

Vegetative cover

All

Snow cover

Cloud evolution

28 / 50

Size of a theodolite is specified by_______?

the diameter of lower plate

the length of telescope

the diameter of upper plate

the diameter of vertical circle

29 / 50

Stretcher bar is provided_______?

to permit lateral movement of the tongue rail

to ensure exact gauge at the toe of the switch as well as the nose of crossing

to maintain the two tongue rails at the exact distance

to prevent any vertical movement between the wing rail and nose of crossing

30 / 50

Which of the following metamorphic rocks has the most weather resisting characteristics ?

quartzite

marble

lime stone

slate

31 / 50

In basins subjected to strong winds and tide, the length of the berthing area should not be less than___________?

the length of design vessel + 10% clearance between adjacent vessels

twice the length of design vessel

the length of design vessel

the length of design vessel + 20% clearance between adjacent vessels

32 / 50

If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is_____________?

3880 kilo litres

1880 kilo litres

4880 kilo litres

2880 kilo litres

33 / 50

If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that_____?

demand cannot be met by inflow

reservoir was not full at the beginning

none of the above

both (A) and (B)

34 / 50

The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is____________?

0.05554 cumec

0.0556 cumec

0.05556 cumec

0.05552 cumec

35 / 50

In a Sarda type fall, rectangular crest is used for discharge upto_____?

6 cumecs

10 cumecs

20 cumecs

14 cumecs

36 / 50

Brick walls are measured in sq. m if the thickness of the wall is________?

None of these

10 cm

15 cm

20 cm

37 / 50

Residual soils are formed by_____?

wind

water

glaciers

none of the above

38 / 50

Pick up the correct statement for the web stiffeners?

for horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange

All

d is the distance between flange angles or the clear distance between flanges

vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d

39 / 50

If the depth of flow in a circular sewer is 1/4th of its diameter D, the wetted perimeter is_____?

40 / 50

With increase in speed of the traffic stream, the maximum capacity of the lane_______?

decreases

increases

first increases and then decreases after reaching a maximum value at optimum speed

first decreases and then increases after reaching a minimum value at optimum speed

41 / 50

The screens are fixed__________?

Perpendicular to the direction of flow

At an angle 30? to 60? to the direction of flow

None of these

Parallel to the direction of flow

42 / 50

Pick up the correct statement from the following ?

The variation of the refractive index with wave length, is called dispersion,

The splitting of colours of white light by passing through a prism is caused due to dispersion

The refractive index of a medium varies according to the wavelength of the radiation,

All

43 / 50

A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is________?

W?L/2AE

WL/2AE

W?L/AE

WL/AE

44 / 50

The first cost to be incurred if the piece of equipment now in place had been bought for a second hand dealer or some other business is called ___________?

First cost

Fixed cost

In-place value

Material cost

45 / 50

The allowable tensile stress in structural mild steel plates for steel tank is assumed as_______?

105.5 MPa on gross area

105.5 MPa on net area

150.0 MPa on gross area

95.0 MPa on net area

46 / 50

Couple close roof is suitable for maximum span of_____?

4.5 m

2.5 m

5.5 m

3.5 m

47 / 50

In a grit chamber of a sewage treatment plant ___________?

Depth of 0.9 m to 1.20 m is kept

One minute of detention period is kept

All

Flow velocity 0.15 m to 0.3 m/sec is kept

48 / 50

A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be_______?

2-Mar

3-Feb

8-May

5-Aug

49 / 50

According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is_____?

Half of the width of the slab

Three-fourth of the width of the slab

Two -third of the width of the slab

Four-fifth of the width of the slab

50 / 50

Sewer ventilating columns are generally placed at______?

Distances 150 m to 300 m

All

Upper ends of branch sewers

Every change in the size of sewers

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