Civil Engineering Quiz 40

1 / 50

The screens are fixed__________?

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

Parallel to the direction of flow

Perpendicular to the direction of flow

None of these

2 / 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

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

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

twice the length of design vessel

3 / 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

both (A) and (B)

reservoir was not full at the beginning

none of the above

4 / 50

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

Cloud evolution

Snow cover

Vegetative cover

All

5 / 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_____________?

1880 kilo litres

3880 kilo litres

2880 kilo litres

4880 kilo litres

6 / 50

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

7 / 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/AE

WL/2AE

W?L/AE

8 / 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_____?

Three-fourth of the width of the slab

Two -third of the width of the slab

Four-fifth of the width of the slab

Half of the width of the slab

9 / 50

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

10 / 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 ___________?

Fixed cost

In-place value

Material cost

First cost

11 / 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

12 / 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_________?

5-Jan

2-Jan

4-Jan

3-Jan

13 / 50

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

50 mm

70.6 mm

100 mm

150 mm

14 / 50

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

Partnership

Corporation

Proprietorship

Entrepreneurship

15 / 50

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

Size of the sewer

Shape of the sewer

Roughness of sewer surface

All

16 / 50

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

17 / 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

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

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

All

18 / 50

In a grit chamber of a sewage treatment plant ___________?

All

One minute of detention period is kept

Depth of 0.9 m to 1.20 m is kept

Flow velocity 0.15 m to 0.3 m/sec is kept

19 / 50

Couple close roof is suitable for maximum span of_____?

2.5 m

3.5 m

5.5 m

4.5 m

20 / 50

Size of a theodolite is specified by_______?

the length of telescope

the diameter of upper plate

the diameter of lower plate

the diameter of vertical circle

21 / 50

Residual soils are formed by_____?

water

wind

glaciers

none of the above

22 / 50

Which of the following is an incorrect statement ?

None of the above statement is correct.

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

Flow nozzle is cheaper than venturimeter but has higher energy loss

Coefficient of contraction of a venturimeter is unity

23 / 50

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

15 cm

20 cm

10 cm

None of these

24 / 50

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

fcr<fcs

tcr ? rcs = tct

fcr>fcs>fc

fc5>fcr>fC

25 / 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

26 / 50

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

decreases

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

increases

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

27 / 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_______?

Lever arm of the section

One-third lever arm of the section

One -half lever arm of the section

One and half lever arm of the section

28 / 50

The slope of sewer shall be_________?

zero

given in the direction opposite to natural slope of ground

given in the direction of natural slope of ground

steeper than 1 in 20

29 / 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

0.05556 cumec

0.0556 cumec

0.05552 cumec

30 / 50

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

slate

quartzite

lime stone

marble

31 / 50

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

same value

lesser value

accurate value

higher value

32 / 50

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

150.0 MPa on gross area

95.0 MPa on net area

105.5 MPa on net area

105.5 MPa on gross area

33 / 50

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

20 kg/cm2

10 kg/cm2

15 kg/cm2

25 kg/cm2

34 / 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_______?

8-May

3-Feb

2-Mar

5-Aug

35 / 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

36 / 50

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

20 cumecs

10 cumecs

14 cumecs

6 cumecs

37 / 50

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

S<0

S>0

0 < S < 100

0<S<100

38 / 50

Fresh sewage may become stale in________?

One hour

Three to four hours

Two to three hours

Six hours

39 / 50

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

16 d

12 d

4 d

40 / 50

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

semaphore arm lowered but warner arm horizontal

both semaphore and warner arms lowered

both arms are horizontal

none of the above

41 / 50

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

sec A

Arad

tan A

cot A

42 / 50

Dry weather flow is_________?

Average annual rate of flow

Average monthly rate of flow

Average daily rate of flow

Water supply allowance per capita

43 / 50

Sewer ventilating columns are generally placed at______?

All

Distances 150 m to 300 m

Upper ends of branch sewers

Every change in the size of sewers

44 / 50

The runoff increases with_______?

increase in infiltration capacity

all of the above

increase in intensity of rain

increase in permeability of soil

45 / 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________?

A is true but R is false

A is false but R is true

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

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

46 / 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 = 0.07775 aP

D = 0.0775 aP

D = 0.00775 aP

D = 0.775 Pa

47 / 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

slope-area method

ultra-sonic method

area-velocity method

48 / 50

Stretcher bar is provided_______?

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

to permit lateral movement of the tongue rail

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

to maintain the two tongue rails at the exact distance

49 / 50

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

cannot balance each other

are equivalent

produce moment of a couple

balance each other

50 / 50

Pick up the correct statement from the following ?

All

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

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

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

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