# Water Resources Engineering MCQ Questions & Answers

Water Resources Engineering MCQs : This section focuses on the "Water Resources Engineering". These Multiple Choice Questions (MCQs) should be practiced to improve the Water Resources Engineering skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

A hydraulic jump in a control meter will be formed above the control, if its original

A. depth is more than critical depth
B. depth is less than the critical depth
C. depth is equal to critical depth
D. none of these.

Question 2

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.

Question 3

A well penetrates to 30 m below the static water table. After 24 hours of pumping at 31.40 litres/minute, the water level in a test well at a distance of 80 m is lowered by 0.5 m and in a well 20 m away water is lowered by 1.0 m. The transmissibility of the auifer, is

A. 1.185 m2/minute
B. 1.285 m2/minute
C. 1.385 m2/minute
D. 1.485 m2/minute

Question 4

Absolute humidity in air

A. decreases at higher altitudes
B. increases at higher altitudes
C. remains constant at all altitudes
D. none of these.

Question 5

According to Robert E. Horton, the equation of infiltration capacity curve, is (where letters carry their usual meanings)

A. f = fc (fo - fc) ekt
B. f = ft - (fo - fc) e-kt
C. f = ft + (fo - fc) e-kt
D. f = f + (fo - fc) ekt

Question 6

Consumptive use of a crop during growth, is the amount of

A. interception
B. transpiration
C. evaporation
D. all the above.

Question 7

For calculating the evaporation rate over a reservoir surface E = 0.771 (1.465 - 0.00732 B) (0.44 - 0.007375 V) (pe - pa), the equation is given by

A. Roohwer's, formula in M.K.S.
B. Roohwer's formula in F.P.S.
C. Dalton's formula in F.P.S.
D. Dalton's formula in M.K.S.

Question 8

For computing the run off volumes of large areas, number of infiltrations used are

A. 2
B. 3
C. 4
D. 5

Question 9

For determination of average annual precipitation in a catchment basin, the best method is

A. Arithmetical method
B. Thiessen's mean method
C. Isohyetal method
D. None of these.

Question 10

For the estimate of high floods in fan-shaped catchment, the formula used is

A. Dicken's formula
B. Ryve's formula
C. Inglis formula
D. none of these.

Question 11

If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying

A. sine of the angle of inclination with vertical
B. cosine of the angle of inclination with vertical
C. tangent of the angle of inclination with vertical
D. calibration coefficient of the gauge.

Question 12

If the potential infiltration of a water shed having a soil with fair pasture cover, is 10 cm and rainfall is 12 cm, the direct run off is :

A. 2 cm
B. 3 cm
C. 5 cm
D. 8 cm.

Question 13

In India the recording type rain gauge generally used, is

A. weighing type
B. tipping type
C. float recording type
D. none of these.

Question 14

In India, rain fall is generally recorded at

A. 8 A.M.
B. 12 Noon
C. 4 P.M.
D. 8 P.M.

Question 15

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 x Ground water flow.

Question 16

Pick up the correct statement from the following :

A. Perched aquifer is found in unconfined aquifer
B. The top surface of the water held in the perched aquifer, is known as perched water table
C. Perched aquifer is formed in unfined accquifer if an impervious layer exists
D. All the above.

Question 17

Pick up the incorrect statement from the following :

A. The rate of flow of water through a unit cross-sectional area under a unit hydraulic gradient, is called coefficient of permeability
B. The rate of flow of water through a vertical strip of the acquifer of unit width and full depth under a unit hydraulic gradient, is called coefficient of transmissibility
C. The flow of water through acquifers, is governed by the Darcy's law
D. The term 'transmissibility' was introduced by Meinzer

Question 18

Precipitation caused by lifting of an air mass due to the pressure difference, is called

A. cyclonic precipitation
B. convective precipitation
C. orographic precipitation
D. none of these.

Question 19

Prof. Running suggested the method for extending the discharge curve. It is known as

A. Logarithmic method
B. y method
C. General method
D. None of these.

Question 20

Shrouding is provided in

A. cavity type tube wells
B. slotted type tube wells
C. strainer type tube wells
D. perforated type tube wells.

Question 21

The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is

A. greater for heavy rain
B. greater for lighter rain
C. greater for large drops
D. lesser for small rain drops.

Question 22

The efficiency of a pump may be taken as

A. 0.55
B. 0.6
C. 0.65
D. 0.7

Question 23

The initial basin recharge is equal to

A. interception
B. depression storage
C. rain absorbed by the moisture deficiency
D. all the above.

Question 24

The main factor which affects the infiltration capacity, is

A. thickness of saturated layer
B. depth of surface detention
C. soil moisture
D. all the above.

Question 25

The quantity of water retained by the sub-soil against gravity, is known

A. yield
B. porosity
C. specific yield
D. specific retention

Question 26

The run off a drainage basin is

A. Initial recharge + ground water accretion + precipitation
B. Precipitation + ground water accretion + initial recharge
C. Precipitation - ground water accretion + initial recharge
D. Precipitation - ground water accretion - initial recharge.

Question 27

The standard height of a standard rain gauge, is

A. 10 cm
B. 20 cm
C. 30 cm
D. 50 cm.

Question 28

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

Question 29

The theory of infiltration capacity was given by

A. Merrill Bernard
B. W.W. Horner
C. Le-Roy K. Shermen
D. Robert E. Horten.

Question 30

Unit Hydrograph theory was enunciated by

A. Merril Bernard
B. W.W. Horner
C. Le-Roy K. Shermen
D. Robert E. Horten.

Question 31

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