Practice Test: Question Set - 02
1. Isohyets are the imaginary lines joining the points of equal
- (A) Pressure
- (B) Height
- (C) Humidity
- (D) Rainfall
2. As per Lacey’s theory, the silt factor is
- (A) Directly
proportional to average particle size
- (B) Inversely
proportional to average particle size
- (C) Directly
proportional to square root of average particle size
- (D) Not
related to average particle size
3. The time required by rain water to reach the outlet of drainage basin, is generally called
- (A) Time
of concentration
- (B) Time
of overland flow
- (C) Concentration
time of overland flow
- (D) Duration
of the rainfall
4. Which of the following is a flexible outlet?
- (A) Submerged
pipe outlet
- (B) Kennedy’s
gauge outlet
- (C) Gibb’s
outlet
- (D) None of the
above
5. Pick up the correct statement from the following:
- (A) The
specified duration of unit hydro-graph, is called unit duration
- (B) The
rain during specified duration, is called unit storm
- (C) The
number of unit hydrographs for a given basin, is theoretically infinite
- (D) All
the above
6. The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
- (A) Aqueduct and
syphon aqueduct
- (B) Aqueduct
and super passage
- (C) Super
passage and canal syphon
- (D) Level
crossing
7. The rate of rainfall for successive 10 minute periods of a 60 minute duration storm, are shown in the below figure. If the value of φindex is 3 cm/hour, the runoff will be
- (A) 2 cm
- (B) 3 cm
- (C) 4 cm
- (D) 5 cm
8. River training for depth is achieved by
- (A) Groynes
- (B) Construction
of dykes or leaves
- (C) Both (A) and
(B)
- (D) Groynes
and bandalling
9. Pick up the correct statement from the following:
- (A) A
confined bed of impervious material laid over an aquifer, is known as an
aquiclude
- (B) The
top most water bearing strata having no aquifer, is known as non-artesian
aquifer
- (C) The
ordinary gravity wells which supply water from the top most water bearing
strata, are called water table wells
- (D) All the
above
10. A land is known as waterlogged
- (A) When
the permanent wilting point is reached
- (B) When
gravity drainage has ceased
- (C) Capillary
fringe reaches the root zone of plants
- (D) None of the
above
11. Boston society of Civil Engineer's formula Q = 0.0056 × (D/t) in cumecs/square km is based upon
- (A) Rainfall
and drainage area
- (B) Total
run off and drainage area
- (C) Drainage
area and its shape
- (D) Drainage
area
12. A hyetograph is a graphical representation of
- (A) Rainfall
intensity and time
- (B) Rainfall
depth and time
- (C) Discharge
and time
- (D) Cumulative
rainfall and time
13. Pick up the correct statement from the following:
- (A) Hydrograph
is a plot of discharge and time
- (B) In
hydrographs, time is plotted on X-axis
- (C) The maximum
flow in the river due to rainfall, is called peak flow
- (D) All the
above
14. Which of the following methods is used to estimate flood discharge based on high water marks left over in the past?
- (A) Slope-area method
- (B) Area-velocity
method
- (C) Moving boat
method
- (D) Ultrasonic
method
15. If the dew point is greater than 0°C
- (A) Dew will be
formed
- (B) Frost will
be formed
- (C) Vapours will
be formed
- (D) None of
these
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