SSC_JE_CE_Irrigation Engineering Booster Quiz -6

Water conveyance efficiency is given as:

Critical velocity ratio for use in Kennedy’s theory is:

As per Lacey’s regime equation, what is the flow velocity proportional to?

The normal annual rainfall of the stations A, B, C and D in a catchment is 82 mm, 91 mm, 85 mm, and 90 mm respectively. In the year 2007, the station D was inoperative when stations A, B and C recorded annual rainfall of 91 mm, 72 mm and 80 mm. Estimate the missing rainfall at station D in the year 2007.

In a river carrying a discharge of 150 m³/s, the stage at a station A was 3.6 m and the water surface slope was 1 in 6000. If during a flood, the stage at A was 3.6 m and the water surface slope was 1 in 1500, what was the flood discharge (approximately)?

For a culturable command area of 800 hectare with intensity of 75%, the duty on the field for a certain crop is 1000 hectare/cumec. The design discharge of water course required will be.

If the sensitivity of an irrigation module is 0.25 and the variation in canal water depth is 60%. The rate of change of outlet discharge is

The field capacity and permanent wilting point for a given 0.8 m root zone soil are 35% and 10% respectively. At a given time, the soil moisture in the soil is 20% when a farmer irrigates the soil with 250 mm depth of water. Assuming bulk specific gravity of the soil is 1.6, determine amount of water wasted from consideration of irrigation?( take the plan area of the soil in root zone to be 1 m²)

Find SAR value of the given sample:

[Na⁺] = 345 mg/l , [Ca²⁺] = 60 mg/l , [Mg²⁺ ] = 18 mg/l

Field irrigation requirement (FIR) is