🧪 Civil Engineering MCQ Quiz Hub

1. The best irrigation method that suits area scarcity of irrigation water is
Drip irrigation
Furrow irrigation
Check flooding
Sprinkler irrigation

2. The canal that finally feeds field is known as
Minor canal
Branch canal
Distributary
Field channel

3. Which one of the following is wrong about cement concrete tile lining of canals?
Damaged portion can be repaired easily.
Rounded sections can be easily laid.
Expansion joints are not required.
Rigid quality control is required.

4. A hydraulic jump is formed when
A supercritical flows strike against a subcritical flow
The two flows of supercritical velocities meet each other
A subcritical flow strikes against a supercritical flow
The two flows of subcritical velocities meet each other

5. The fall that is suitable for high drops with low discharge is
Baffle type
Straight glacis
Vertical drop type
Well type

6. The ratio of the rate of change of discharge of the outlet to the rate of change of discharge of the distributary channel is known as
Setting
Sensitivity
Proportionality
Flexibility

7. Which of the following is a type of semi-module outlet?
Gibb's module
Open flume
Open sluice
Submerged pipe outlet

8. The capacity of an irrigation tank is sometimes increased by installing
Divide wall
Dam stones
Saddle
Breast well

9. Lacey gave a relation between
Area and velocity
Velocity and hydraulic mean
Both a and b
None of these

10. Among the following, which crop has the highest value of delta?
cotton
rice
vegetables
wheat

11. Which one of the following is not layout of tile drains?
herring bone system
intercepting drain system
grid iron system
french drain system

12. In flexible module, the discharge depends upon
difference of water levels of water course and distributary
water level of the water course
water level of the distributary
none of the above

13. The depth of water stored in an irrigation tank, rarely exceeds
4
8
10
12 m

14. The water utilizable by plants is available in soils mainly in the form of
hydroscopic water
chemical water
gravity water
capillary water

15. A current meter is used to measure the
discharge
velocity of flow of water
depth of flow of water
None of these

16. The major resisting force in a gravity dam is
uplift pressure
self-weight of dam
wave pressure
water pressure

17. A divide wall is provided
parallel to the axis of weir and upstream of it
parallel to the axis of weir and downstream of it
at an inclination to the axis of weir
at right angle to the axis of water

18. Lining of irrigation channels
does not change the water logging area
increases the water logging area
decreases the water logging area
None of these

19. The spacing of tile drains to relieve waterlogged land is directly proportional to the
The spacing of tile drains to relieve waterlogged land is directly proportional to the
depth of drain below the ground surface
coefficient of permeability of the soil to be drained
depth of drain below the water level

20. depth of drain below the water level
0 to 10
10 to 18
12 to 18
18 to 26

21. Hydrograph is the graphical representation of
surface runoff and time
runoff and time
rainfall and time
ground waterflow and time

22. In a canal system the order in which water flows is
Branch canal minor – distributary – field channels
Branch canal – minor – field channel – distributary
Branch canal – field canal – distributary – minor
Branch canal – distributary – minor- field channels

23. The loss of head unit length of creep is called
Percolation coefficient
Lane's coefficient
Bligh’s coefficient
Coefficient of creep

24. Which of the following methods of applying water may be used on land with irregular topography?
border flooding
check flooding
free flooding
furrow irrigation method

25. furrow irrigation method
a structure which enables the fish to pass upstream
a ladder to climb up dam
a ladder provided in the canal for the maintenance of canal
none of the above

26. A fish ladder is
a structure which enables the fish to pass upstream
a ladder to climb up dam
a ladder provided in the canal for the maintenance of canal
None of the above

27. A typical and most desirable section of a canal is
partly in cutting and partly in filling
in cutting
in filling
None of the above

28. A parabolic glacis type of fall is known as (A) Montague fall (B) Inglis fall (C) Ogee fall
Montague fall
Inglis fall
Ogee fall
Sarda fall

29. In check flooding levees are generally constructed along the contours, having vertical interval of about
50 to 100 mm
100 to 250 mm
300 to 600 mm
600 to 1000 mm

30. Which one of the following is the wrong statement about a head regulator?
controls the supplies entering the off take channel
controls entry of silt into off take channel
serves as a meter for measuring discharge
when the water level in main channel is low, it helps in heading up water

31. The best technique of water distribution in the field that can be used for all types of soils and for widely different topographies and slopes is
free flooding
furrow irrigation method
border flooding
sprinkler irrigation method

32. By adopting lining canals in new projects
storage and diversion capacity may be reduced
earthwork can be reduced
number of canal structures can be reduced
All of the above

33. In tube well irrigation system the best method of pricing is
volumetric method
crop rate system
flat rate pricing
any of the above

34. Infiltration rate is always
equal or more than the infiltration capacity
equal to or less than the infiltration capacity
less than the infiltration capacity
more than the infiltration capacity

35. In border flooding type of water distribution in the forms, the supply ditch is in the form of
underground concrete pipe having risers at intervals
Earthen channel
lined channel
any one of the above

36. For sands greater than the standard, the critical velocity ratio is _____ one.
equal
more than
equal or more than
less than

37. The main function of a divide wall is to
separate the undersluices from weir proper
provide smooth flow at sufficiently low velocity
prevent river floods from entering the canal
control the silt entry in the canal

38. Which of the following can be used as a meter fall?
flumed glacis fall
vertical drop fall
unflumed glacis fall
All of the above

39. In a flow-mass curve study, the demand line drawn from a ridge does not intersect the mass curve again. This implies that
the reservoir is not full at the beginning
the demand cannot be met by the inflow as the reservoir will not refill
the reservoir is washing water by spill
the storage is not adequate

40. The water stored in the reservoir below the minimum pool level is called
valley storage
surcharge storage
dead storage
useful storage

41. The most suitable material for the central impervious core of a zoned embankment type dam is
clay mixed with fine sand
coarse sand
clay
Silty clay

42. The diameter of pressure relief values used in the bed and sides of canal are _____ respectively.
50 mm and 150 mm
100 mm and 150 mm
100 mm and 200 mm
150 mm and 50 mm

43. Kenendy gave a relation between
rainfall and runoff
area and velocity
critical velocity and depth of flowing water
velocity and hydraulic mean depth

44. In which of the following methods of applying water to land, ditches are excavated in the field?
border flooding
check flooding
furrow irrigation method
free flooding

45. The unit hydrograph has one unit of
rainfall excess
rainfall duration
time base of direct runoff
discharge

46. A canal which is aligned at right angles to the contour is called
contour canal
watershed canal
side slope canal
branch canal

47. According to Bligh's creep theory, the percolating water follows
in a straight path under the foundation work
in a straight line path under the floor
the outline of the base of the foundation
None of the above

48. A solid construction across a river to raise its water level and divert the water into the canal is known as
weir
bund
barrage
dam

49. The type of fall which consists of an inlet with a pipe at its bottom to carry water to a downstream well is known as
vertical drop type fall
straight glacis fall
pipe fall
cylindrical fall

50. In a channel bed made of fine sand, when the velocity is gradually increased the sequence of bed formation is
Flat surface dunes – saw tooth ripples – antidunes
Flat surface – dunes – antidunes saw tooth ripples
Saw tooth ripples – flat surface – antidunes – dunes
Saw tooth ripples – dunes – flat surface – antidunes

51. If cement concrete lining is provided to canal, maximum permissible velocity is
2 to 2.5 m/sec
3.0 to 3.5 m/sec
4.0 to 5.0 m/sec
4.5 to 5.5 m/sec

52. The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of
same and longer duration
same duration only
same and shorter duration
any duration

53. The elementary profile of a dam is
a right angled triangle
an equilibrium triangle
a trapezoidal
a rectangle

54. An artesian aquifer is the one where
Water is under pressure between two impervious strata
Water table serves as upper surface of zone of saturation
Water surface under the ground is at atmospheric pressure
None of the above

55. Unit of runoff in M.K.S. system is
cubic metre
cubic metre/sec
metre/sec
square metre

56. The infertility of the soil in waterlogged area is due to
increase in salinity
growth of weeds
death of bacteria causing nitrification
All of the above

57. When Sodium Absorption Ratio (SAR) is 30, it is called
Very high sodium water
Low sodium water
Medium sodium water
High sodium water

58. Assumed value of saturation gradient (H : V) in clay is
1 : 2
1 : 3
1 : 4
1 : 8

59. In drip irrigation, laterals are usually _____ dia and _____ long.
10 to 12.5 and 50 m
10 to 12.5 mm and 20 m
25 to 30 mm and 50 m
25 to 30 mm and 100 m

60. A minor irrigation scheme involves command area equal to or less than
200 hectares
500 hectares
1000 hectares
2000 hectares

61. Which of the following methods of applying water may be used on rolling land?
Free loading
Furrow flooding
Check flooding
Boarder flooding

62. Cyclonic precipitation is caused by lifting of an air mass due to
natural topographical barriers
pressure difference
temperature difference
All of the above

63. For a floor control reservoir, the effective storage is equal to
useful storage - valley storage
useful storage + surcharge storage
useful storage + surcharge storage – valley storage
useful storage + surcharge storage + valley storage

64. A channel is said to be in regime when
is flowing in unlimited incoherent alluvium of the same character as that transported
silt grade and silt charge are constant
discharge is constant
All of the above

65. As per I.S. code requirement of free board for main canal is
0.25 m
0.75 m
1.0 m
1.25 m

66. Which one of the following is the wrong statement about Bligh's creep theory?
on upstream side floor thickness should be designed carefully
safety against piping can be ensured by providing sufficient creep length
it makes no distinction between horizontal and vertical creeps
percolating water follows the outline of the base of foundation

67. The best unit duration of storm for a unit hydrograph is
1 hour
Equal to basin lag
One half of basin lag
One fourth of basin lag

68. A pumped storage plant is a
peak load plant
high head plant
base load plant
base load plant