Quiz: Civil Quiz 49

Civil Quiz 49

The friction experienced by a body, when in motion, is known as

dynamic friction

rolling friction

limiting friction

static friction

The bull headed rails are provided on points and crossings.

Both A and B

None of the above

Yes

Which of the following is type of cofferdam?

Rock-filled crib cofferdam

Cellular cofferdam

Suspended cofferdam

All of the above

In which type of water demand, minimum average consumption of water takes place?

domestic water demand

fire demand

institutional and commercial water demand

industrial water demand

The discharge of regulated chemicals into surface waters is controlled by

pdac

cercla

npdes

sara

If D is distance between centres of two parallel track of gauge G, then, total length of cross-over (from the point of commencement to the point of termination) with an intermediate straight portion and N crossing, is given by

DN + G [2N + N2)]

DN + G [N + N2)]

DN + G [3N + N2)]

DN + G [4N + N2)]

Where is the turbine not used?

Solar power

Windmill

Water wheels

Gas plant

For preparing porcelains, the clay should be

Of good plasticity

Of high degree of tenacity

All the above

Sufficiently pure

In flemish bond_____..

all course are header course

alternate brick of stretcher and header formation is same course

alternate course of the stretcher and headers

all course are stretcher course

Quick lime is (i) Slow in setting (ii) Rapid in slacking (iii) Good in strength The correct answer is

Both (i) and (ii)

Both (ii) and (iii)

Only (i)

Only (ii)

Varingon's theorem of moments states that if a number of coplaner forces acting on a particle are in equilibrium, then

their algebraic sum is zero

the algebraic sum of their moments about any point in their plane is zero

the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point

their lines of action are at equal distances

In the mid-section formula

the area of mid-sections is calculated by using mean depth

all of the above

the volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections

the mean depth is the average of depths of two consecutive sections

Voids that implode near metal surface develops a

Drag force

Shock waves

Flow speed View Answer

Cyclic stress

The thickness t of a single flat lacing should not be less than

1/40th length between inner end rivets

1/60th length between inner end rivets

1/50th length between inner end rivets

1/30th length between inner end rivets

The overall length of a turn out is the distance between the end of stock rail and

Toe of crossing

Throat of crossing

Actual nose of crossing

Heel of crossing

If a number of forces are acting at a point, their resultant will be inclined at an angle ? with the horizontal, such that

tan ? = ?V x ?H

tan ? = ?H / ?V

tan ? = ?V / ?H

None of the above

The piles which do not support the load by themselves, but act as a medium to transmit the load from the foundation to the resisting sub-stratum, are known as

batter piles

friction piles

compaction piles

bearing piles

For sea water concreting _______ . cement shall be used.

Portland pozzolana slag cement

Super sulphated cement

Portland slag cement

All of above

Discharge in inward flow reaction turbine

Gradually decreases

Increases

Remains constant

Decreases

Euler number is important in which of the following flow situations?

Pressure rise due to sudden closure of valves

Flow through pipes

All of the above

Discharge through orifices, mouthpieces and sluices

A runoff river plant is

a high head scheme

a low head scheme

none of the above

a medium head scheme

Which of the following factors determine the friction factor for turbulent flow in a rough pipe?

Froude's number and relative roughness.

Froude's number and Mach's number

Reynolds number and relative roughness

Mach number and relative roughness

Construction team means

All the above

An owner

An engineer

An architect

The pipe joint commonly used in pumping stations is

flanged joint

expansion joint

flexible joint

spigot and socket joint

A pre-stressed concrete member is preferred because

Removal of cracks in the members due toshrinkage

Its dimensions are not decided from the diagonal tensile stress

Large size of long beams carrying large shear force need not be adopted

All the above

Which of the following excavators is most suitable for digging under water?

Clam shell

Drag line

Hoe

Dipper shovel

In level crossing, the water level of canal is much higher than that of the drainage.

TRUE

FALSE

Both A and B

None of the above

The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as

barometric levelling

longitudinal levelling

reciprocal levelling

hypometry

The ratio of static friction to dynamic friction is always

equal to one

greater than one

none of these

less than one

Bio-chemical oxygen demand (B.O.D.) of safe drinking water must be

100