A triangular DRH due to a storm has a time base of 80 hrs and peak flow of 50 m³/sec occurring at 20 hrs from the start. If the catchment area is 144 sq. km the rainfall excess in the storm was

A. Frog B. Mould Board C. Land Side D. None of these

A. Depth of bed B. Porosity of the bed C. Density of the particles D. All of the above

A. To carry the seeds and fertiliser in separate compartments B. To open furrows at uniform depth C. To cover the seed and fertiliser D. All of the above

A. Zero B. Positive slip C. Negative slip D. None of these