Test: Water Resources Engineering - 4 - Civil Engineering (CE) MCQ

From the data of the rain storm shown in the below figure, the value of W_index is

Izzard formula for the time of concentration in minutes for the plots having no channels, is (where L_o is the length of overland flow in metres and Kp rainfall intensity in cm/hour)

A unit hydrograph is a hydrograph of a rain storm of a specified duration resulting from a run-off of

Pick up the correct statement from the following :

The best unit period of a unit hydrograph, is equal to basin lag divided by

If total run off of a basin of 50 hectares is 0.8 cm, the ordinate of Bernard's distribution graph, may be calculated by the formula (where Q is the discharge in cumecs at the given time)

Pick up the correct statement from the following :

If the grain size of soil increases

The equation which is used for determining the velocity of ground water flow in metres per day is known as

Pick up the correct statement from the following :

While determining the yield of a gravity well by pumping, the depth of water table in two tests wells at distances r₁ and r₂ from the centre of the main well were found to be s₁ and s₂ respectively. Assuming the coefficient of transmissibility of the soil as T, the discharge Q may be given by

According to Thiem, the permeability of an aquifer may be obtained from the equation

The Dupuit formula is based on

A well is sunk in an unconfined aquifer having a saturated depth of 100 m. Assuming the equilibrium flow conditions and a homogeneous aquifer and radius of influence to be same, the ratio of discharges at 20 m and 40 m draw downs, is

Evaporation losses depend upon

Phytometer method is generally used for the measurement of

In the estimate of design flood, Dickens assumes that high flood in cumecs, is proportional to catchment area raised to the power

For high flood estimates the average value of the constant C in Dicken's formula Q = CA^3/4, is

Pettis formula Q = C (P.B)^5/4 cumecs, is based upon

Boston society of Civil Engineer's formula in cumecs/square km is based upon

For predicting floods of a given frequency, the best reliable method is

The earthen embankments constructed parallel to the river banks at some suitable distance for flood control, are known as