A recording type rain gauge
Pick up the correct statement from the following :
The infiltration capacity during rain storm, is considerably reduced due to
In India the recording type rain gauge generally used, is
Absolute humidity in air
If the potential infiltration of a water shed having a soil with fair pasture cover, iscm and rainfall iscm, the direct run off is :
The run off a drainage basin is
A well penetrates tom below the static water table. Afterhours of pumping at 31.litres/minute, the water level in a test well at a distance ofm is lowered by 0.5 m and in a wellm away water is lowered by 1.0 m. The transmissibility of the auifer, is
The quantity of water retained by the sub-soil against gravity, is known
For computing the run off volumes of large areas, number of infiltrations used are
A unit hydrograph is a hydrograph of a rain storm of a specified duration resulting from a run-off of
The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is
The best instrument for measuring the velocity of a stream flow is
Shrouding is provided in
If the grain size of soil increases
Pick up the incorrect statement from the following :
For high flood estimates the average value of the constant C in Dicken's formula Q = CA3/4, is
Time of overland flow, is affected by
The rainfall at any place is described by
The Dupuit formula is based on
From the Survey of India map, the distance of the critical point iskm and difference in elevation ism. The over land flow time, is
The polythene bottles are used for collecting rain water and. their capacities is
If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying
Rain simulators are used for the determination of
Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure
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