Quiz 4

In the power relationship Z = a R , for estimation of rainfall using weather radar, the Z value is

reflectivity

Reflectivity rainfall depth

Rainfall intensity

None of the answers

Thiessen polygon method is used for estimation of :

average precipitation on a watershed

Missing preciptiation data

maxium precipitation data

None of the answers

Which one of the following models requires the largest amount of computational resources and data ?

Distributed model

lumped model

semi-distributed

None of the answers

One of these methods is not average precipitation estimation method :

Isohyetal method is used for estimation of:

Average precipitation data

Missing preciptiation data

None of the answers

Centroidal distance weighting method is applicable for :

Estimation of average precipitation

estimation of missing preciptiation

None of the answers

These errors associated with a measurement process of instruments can be easily corrected

Systematic errors

Random errors

Both systematic and random errors

None of the answers

A weather radar ___________________________ precipitation

estimates

observes

Minimizes

none of the answers

Based on Risk formula, As the return period considered for the event used for design increases

risk decreases

risk increases

risk does not change

none of the answers

In the formula by Ven Te Chow P=Pmean + K Pstd K is:

Frequency factor and non dimensional

Frequency factor and has dimensions of depth

Precipitation ratio and non dimensional

sample size

None of the answers

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