Q.1) Hydrograph is the graphical representation of :
A) Runoff and time
B) Surface runoff and time
C) Ground water flow and time
D) Rainfall and time
Option (A)
Q.2) If the intensity of rainfall is more than the infiltration capacity of soil, then the infiltration rate will be :
A) Equal to rate of rainfall
B) Equal to infiltration capacity
C) More than rate of rainfall
D) More than infiltration capacity
Option (B)
Q.3) Under the same conditions, which of the following shapes of water surface will give the highest rate of evaporation?
A) Flat water surface
B) Convex water surface
C) Concave water surface
D) Independent of shape of water surface
Option (B)
Q.4) 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
Option (B)
Q.5) If 4-hour unit hydrographs are staggered by 4 hours and added graphically, the resulting hydrograph will be :
A) 4-hour unit hydrograph
B) 4-hour hydrograph with 20 mm runoff
C) 8-hour unit hydrograph
D) 8-hour hydrograph with 20 mm runoff
Option (D)
Q.6) The major resisting force in a gravity dam is :
A) Water pressure
B) Wave pressure
C) Self-weight of dam
D) Uplift pressure
Option (C)
Q.7) Which of the following spillways is least suitable for an earthen dam?
A) Ogee spillway
B) Chute spillway
C) Side channel spillway
D) Shaft spillway
Option (A)
Q.8) The main function of a divide wall is to :
A) Control the silt entry in the canal
B) Prevent river floods from entering the canal
C) Separate the undersluices from weir proper
D) Provide smooth flow at sufficiently low velocity
Option (C)
Q.9) According to Lacey’s theory, the silt supporting eddies are generated from :
A) Bottom of channel only
B) Sides of channel only
C) Bottom as well as sides of channel
D) None of the above
Option (C)
Q.10) 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
Option (C)
Q.11) An aggrading river is a :
A) Silting river
B) Scouring river
C) Both silting and scouring river
D) Neither silting nor scouring river
Option (A)
Q.12) A repelling groyne is aligned :
A) Pointing upstream
B) Pointing downstream
C) Perpendicular to bank
D) Parallel to bank
Option (A)
Q.13) The net head under which the turbine reaches its peak efficiency at synchronous speed is called :
A) Design speed
B) Rated head
C) Gross head
D) Operating head
Option (A)
Q.14) In linear reservoir, storage varies linearly with :
A) Time
B) Inflow rate
C) Outflow rate
D) None of the above
Option (C)
Q.15) Discharge per unit drawdown at a well is called :
A) Specific storage
B) Specific yield
C) Specific capacity
D) None of the above
Option (C)
Q.16) Retrogression of downstream levels, generally considered in the design of weirs or barrages, is :
A) Higher at high flood stage than at low water levels
B) Same at high flood stage and at low water levels
C) Higher at water levels stage than at high flood stage
D) Independent of the stage of flow
Option (C)
Q.17) The probable maximum flood is :
A) The standard project flood of an extremely larger river
B) A flood adopted in the design of all kinds of spillways
C) A flood adopted in all hydraulic structures
D) An extremely large but physically possible flood in the region
Option (D)
Q.18) Conjuctive use of water in basin means :
A) Combined use of water for irrigation and for hydropower generation
B) Combined use of surface and ground water resources
C) Use of irrigation water for both rabi and kharif season
D) Use of irrigation water by cooperative of farmers
Option (B)
Q.19) Rigid boundary canals, whose bed and banks are made with non-erodible materials are in :
A) True regime
B) Permanent regime
C) Final regime
D) None of the above
Option (B)
Q.20) In a flow-mass curve study, the demand line drawn from a ridge does not intersect the mas curve again. This implies that :
A) The reservoir is not full at the beginning
B) The storage is not adequate
C) The demand cannot be met by the inflow as the reservoir will not refill
D) The reservoir is wasting water by spill
Option (C)
