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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 :
Normal ratio method
Thiessen polygon method
Centroidal distance method
Isohyetal method
None of the answers
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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