Water Resources Engineering and Hydrology (3160610) MCQs

MCQs of Hyetograph and Hydrograph analysis

Showing 11 to 19 out of 19 Questions
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11.

A watershed is in the form of a sector of a circle of radius 300 metres and angle 60 degree. A 6h storm with rainfall excess of 6 cm, produces a surface runoff hydrograph with linear rising and recession segments, having a base equal to eight times the duration. The peak of the surface runoff hydrograph is __________ cumecs.

(a)

0.03
(b)

0.02
(c)

0.01
(d)

0.09
Answer:

Option (a)

12.

 Unit Hydrograph theory was enunciated by

(a)
    Merril Bernard

 
(b)
    Le-Roy K. Shermen

 
(c)
    Robert E. Horten

 
(d)
    W.W. Horner

 
Answer:

Option (b)

13.

Pick up the correct equation from the following

(a)
    Run off = Surface run off + Ground water flow

 
(b)
    Run off = Surface run off - Ground water flow

 
(c)
    Run off = Surface run off / Ground water flow

 
(d)
     Run off = Surface run off × Ground water flow

 
Answer:

Option (a)

14.

The surface Run-off is the quantity of water

(a)

absorbed by soil
(b)

intercepted by buildings and vegetative cover
(c)

equired to fill surface depressions
(d)

that reaches the stream channels
Answer:

Option (d)

15.

Hydrograph is a graphical representation of 

(a)

Surface runoff 
(b)

Ground water flow 
(c)

rainfall
(d)

Discharge flowing in the river 
Answer:

Option (d)

16.

The surface run off is due to

(a)

initial rain
(b)

residual rain
(c)

rain in the net supply interval
(d)

all the above.
Answer:

Option (c)

17.

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 
Answer:

Option (b)

18.

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 strom 
(c)

total rainfall
(d)

none of above 
Answer:

Option (a)

19.

The surface Run-off is the quantity of water

       

 

 

(a)

Absorbed by soil
(b)

Intercepted by buildings and vegetative cover
(c)

Required to fill surface depressions
(d)

That reaches the stream channels
Answer:

Option (d)

Showing 11 to 19 out of 19 Questions
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