Objective Questions and Answers on Civil Hydrology - Set 05 - ObjectiveBooks

# Practice Test: Question Set - 05

1. Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Lacey’s theory will be
(A) 19 m
(B) 38 m
(C) 57 m
(D) 76 m

2. The equation P - Q = Te Ï†index for determining the infiltration capacity, was suggested by
(A) Horton
(B) Horner
(C) Lloyd
(D) Bernard

3. Which of the following canal outlets maintains a constant discharge?
(A) Non-modular outlet
(B) Flexible outlet
(C) Rigid module
(D) None of the above

4. Pick up correct statement from the following:
(A) The air from outer portion of cyclones gets lifted for causing precipitation
(B) The air from central portion of cyclone's gets lifted for causing precipitation
(C) The air from entire surface of the cyclones gets lifted for causing precipitation
(D) None of those

5. Tortuosity of a meandering river is always
(A) Equal to 1
(B) Less than 1
(C) Greater than 1
(D) Less than or equal to 1

6. Sharp crested weirs are generally used
(A) For large flows
(B) For small flows
(C) For streams carrying high sediment loads
(D) For rivers carrying floating debris

7. A runoff river plant is
(A) A low head scheme
(B) A medium head scheme
(C) A high head scheme
(D) None of the above

8. If the axial length of a drainage basin is 35 km and its form factor is 0.2, the total area of the basin is
(A) 205 sq. km.
(B) 215 sq. km.
(C) 225 sq. km.
(D) 245 sq. km.

9. Interception losses are due to
(i) Evaporation
(ii) Transpiration
(iii) Stream flow
The correct answer is
(A) Only (i)
(B) (i) and (ii)
(C) (ii) and (iii)
(D) (i), (ii) and (iii)

10. Pick up the correct statement from the following:
(A) The ratio of total volume of voids in soil aggregates to the total volume of aggregate, is called Porosity
(B) Water retained by the interstices due to molecular attraction, is called pellicular water
(C) Sum of the percentage of specific yield and specific retention is 100
(D) All the above

11. Instantaneous unit hydrograph is a hydrograph of
(i) Unit duration
(ii) Unit rainfall excess
(iii) Infinitely small duration
(iv) Infinitely small rainfall excess
The correct answer is
(A) (i) and (ii)
(B) (i) and (iv)
(C) (ii) and (iii)
(D) (iii) and (iv)

12. If the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as
(A) 0.10 m
(B) 0.20 m
(C) 0.5 m
(D) 1.0 m

13. From the data of the rain storm shown in the below figure, the value of Windex is
(A) 1.5 cm/hour
(B) 2 cm/hour
(C) 2.5 cm/hour
(D) 3 cm/hour

14. Horizontal acceleration due to earthquake results in
(A) Hydrodynamic pressure
(B) Inertia force into the body of the dam
(C) Both (A) and (B)
(D) None of the above

15. Water contains
(A) One hydrogen atom and one oxygen atom
(B) Two hydrogen atoms and one oxygen atom
(C) One hydrogen atom and two oxygen atoms
(D) Three hydrogen atoms and two oxygen atoms

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