The downstream
end of a long prismatic channel of mild slope, ends in a pool created by
a dam. The resulting non-uniform water surface profile can be described
as one of the following :

Water table
drops by 3 m in an irrigable land of 50 hectare. If porosity and
specific retention are 0.30 and 0.10 respectively, the change in storage
in hectare-meter is :

In the plate bearing test, if the load applied is in the form of an inflated type of wheel, then this mechanism corresponds to :

A
prestressed concrete rectangular beam of size 300 mm x 900 mm is
prestressed with an initial prestressing force of 700 kN at an
eccentricity of 350 mm at midspan. Stress at top of the beam due to
prestress alone, in N/mm² is

The BOD removal efficiency, in percentage, during primary treatmet under normal conditions is about

The unit weight of a soil at zero air voids depends on :

In an area of
200 hectare, water table drops by 4 m. If the porosity is 0.35 and the
specific retention is 0.15, change in volume of storage in the aquifer
is

Generally (fatigue life of welded steel structure/fatigue life of riveted steel structure) ratio is,

Cohesion in soil

In a river, discharge is 173 m³/s;
water surface slope is 1 in 6000; and stage at the gauge station is
10.0 m. If during a flood, the stage at the gauge station is same and
the water surface slope is 1 in 2000, the flood discharge in m³/s, is approximately