The function of algae in oxidation pond is

Uniformity coefficient of filler sand is given by

MPN is

The acceptable range of ph for potable water is

Garret's diagram for the design of irrigation channel is based on

A- 4 hour unit hydrograph of a certain basin has peak ordinate of 80 m³/s the peak ordinate of a 2 hour unit hydrograph for the same basin will be

The spacing of tile drains to relive logged land is directly

A channel designed by lacey's theory has a mean velocity of 1 m/ s, the silt factor is unity. The hydraulic mean radius will be

A low gravity dam is the one whose height is less than or equal to

Which one of the following does not contribute water logging

The discharge per unit draw down at a well is known as

Humidity is measured by

For the irrigation of crops the base period B, duty d and Δ are related to as

A line joining places of equal rainfall is called

The discharge through a trapezoidal channel is maximum when

The depth of flow at which specific energy is minimum is called

Chezy's formula is given as Where V =Velocity; S =Longitudinal slope; R = Hydraulic mean radius and c = Chezy's coefficient

Cipolletti weir is a trapezoidal weir having side slope of

The discharge through a rectangular notch is given by

A channel is a passage through which water flows under

A water closet is commonly made of

Fish ladder is a structure in the body of the weir used for

Creep is the

A channel section consists of

A triangle is said to be well conditioned if none of its angle is less

The lower edge of the sloping surface of a roof is called

The gradient of 1 means a rise or fall of 1 m over a horizontal distance of

Pre- stressed concrete means

Coating the surface of steel by a thin layer of zinc is known as

In village, the material used for covering the pitched roof is

The Indian standard code of practice for plain and reinforced concrete is

The direction indicated by a freely suspended magnetic needle is the

Cohesion less soil is

From septic tank the effluents are discharged in to

Acidity of sewage is indicated by pH value of

Rainfall is measured by

A canal designed to irrigate throughout the year is

The mechanical device used for compacting of concrete when its placing is

(a+b)² is equal to

The area of square of side 0.01 m is

The stones used as a roofing material is

The instrument used to draw an enlarged or reduced size plan in a particular scale from an irregular figure is

The initial lead and lift of earth work excavation in ordinary soil and depositing the earth on bank is

The whole circle bearing of a line of 125° what is its quadrant bearing

In the levelling operations, the Back sight and Force sight are taken to the point

Value of cos 60° is equal to

The length of one link of a metric chain of 30 m

The end supports of an arch are known as

The vertical distance between two adjacent contours is known as

Slump test of concrete is a measure of its