1) unit duration
2) unit rainfall excess
3) infinitely small duration
4) infinitely small rainfall excess
The correct answer is?
A. (1) and (2)
B. (1)and(4)
C. (2) and (3)
D. (3) and (4)
Related Mcqs:
- S-hydrograph is used to obtain unit hydrograph of________________?
A. shorter duration from longer duration
B. longer duration from shorter duration
C. both (A) and (B)
D. none of the above - The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________?
A. direct runoff volume
B. period of storm
C. total rainfall
D. none of the above - The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be__________________?
A. 20 3/sec
B. 25 m3/sec
C. 30 m3/sec
D. 35 m3/sec - The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________?
A. same duration only
B. same and shorter duration
C. same and longer duration
D. any duration - The best unit duration of storm for a unit hydrograph is________________?
A. 1 hour
B. one-fourth of basin lag
C. one-half of basin lag
D. equal to basin lag - Hydrograph is the graphical representation of________________?
A. runoff and time
B. surface runoff and time
C. ground waterflow and time
D. rainfall and time - The shape of recession limb of a hydrograph depends upon________________?
A. basin characteristics only
B. storm characteristics only
C. both (A) and (B)
D. none of the above - A unit hydro graph has one unit of_______________?
A. rainfall duration
B. rainfall excess
C. time base of direct runoff
D. discharge - The water utilizable by plants is available in soils mainly in the form of________________?
A. gravity water
B. capillary water
C. hydroscopic water
D. chemical water - For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is_______________?
A. 0.2 x 106
B. 0.6 x 106
C. 2.4 xlO6
D. 7.2 xlO6
