Practice Test: Question Set - 13
1. Bernard's distribution graph is a plot of time on X-axis and
- (A) Run off on
the y-axis
- (B) Total
run off on the y-axis
- (C) Percentage
of total surface run off on y-axis
- (D) Percentage
of total surface run off during uniform time intervals on y-axis
2. The rate of evaporation from reservoirs may be determined by
- (A) Pan-measurement
method
- (B) Empirical
formulae
- (C) Storage
equation method
- (D) All the
above
3. Pick up the correct statement from the following:
- (A) Rain
which is intercepted by buildings, vegetations and other objects, is generally
known as rainfall interception
- (B) The
difference between the total rainfall and intercepted rainfall, is generally
called ground rainfall
- (C) When
rainfall exceeds the interception rainfall, water reaches the ground and
infiltration starts
- (D) All
the above
4. The standard height of a standard rain gauge, is
- (A) 10 cm
- (B) 20 cm
- (C) 30 cm
- (D) 50 cm
5. The runoff is affected by
- (A) Type
of precipitation
- (B) Rain
intensity and duration of rainfall
- (C) Rain
distribution and soil moisture deficiency
- (D) All
the above
6. With the usual meanings of letters, the equation V = 400 I (D102/4) is used for determining the velocity of ground water flow in metres per day. It is known as
- (A) Meinzer's
formula
- (B) Slichter's
formula
- (C) Darcy's
formula
- (D) Hazen's
formula
7. Hydrology is the science which deals with
- (A) Rain water
- (B) River
water
- (C) Sea
water
- (D) Surface
and underground water
8. Symon's rain gauge is
- (A) Tipping-bucket
gauge
- (B) Weighing
type gauge
- (C) Float
recording gauge
- (D) Non-recording
gauge
9. If P and A are the perimeter and area of a drainage basin, its compactness coefficient, is
- (A) P2/2πA
- (B) P/2πA
- (C) P/2√πA
- (D) P3/π3A
10. Pettis formula Q = C (P.B)5/4 cumecs, is based upon
- (A) Rainfall and
drainage area
- (B) Run off and
drainage area
- (C) Drainage
area and its shape
- (D) Drainage
area
11. A volume of air at constant barometric pressure may be brought to dew point by
- (A) Increasing
the temperature
- (B) Decreasing
the temperature
- (C) Neither (a)
nor (b)
- (D) Both (a) and
(b)
12. The form factor of a drainage basin is obtained by dividing
- (A) Area
of the basin by the axial length
- (B) Average
width of the basin by the axial basin
- (C) Area
of the basin by the square of the axial length
- (D) Both (b) and
(c)
13. If ω is unit weight of water, Q the discharge in cumecs, H the total head lift and η, the efficiency of the pump, the H.P. of the motor is
- (A) H.P. = ω QH/75 η
- (B) H.P. = ω QH/4500 η
- (C) H.P.
= ω Qη/75 H
- (D) H.P. = ω Qη/4500 H
14. 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
15. A recording type rain gauge
- (A) Produces
a mass curve of rain fall
- (B) Records
the cumulative rain
- (C) Is
sometimes called integrating rain gauge or continuous rain gauge
- (D) All the
above