Program Name : Diploma in Civil Engineering
Program Code : CE
Semester : Fifth
Course Title : Water Resource Engineering
Course Code : 22501
Chapter 6. Canals.
Easy : Based on Definition.
1. The Irrigation water is conveyed from the reservoir to flow through an open channel
of shape is called Canal
a) Circular
b) Triangular
c) Trapezoidal
d) Rectangular
Answer: c)
2. Which type of canal does not need cross drainage structures?
a) Side Slope Canal
b) Contour Canal
c) Watershed
Canal
d) Field
Channel
Answer: a)
3. What are the drawbacks of contour alignment?
a) Irrigates on one side only
b) Extra cost on Cross Drainage works
c) Risk of breaching
d) All
Answer: d)
4. Which of the following statement is incorrect?
a) Contour canal follows falling contour
b) Ridge Canal has less number of cross drainage works
c) Ridge Canal leads to more seepage
d) Contour canal does not have falls
Answer: c)
5. Which type of canal is mostly useful in mountain areas at height?
a) Side Slope Canal
b) Contour Canal
c) field canal
d) watershed canal
Answer: b)
6. When will the canal section be economical?
a) When the quantity(estimate) of earthwork in cut-ing at particular Cross section is equal to quantity(estimate) in filing
b) When the quantity(estimate) of earthwork land in cutting at particular Cross section is lesser to
quantity(estimate) in filing
c) When the quantity(estimate) of earthwork land in cutting at particular Cross section is higher to
quantity(estimate) in filing
d) None
Answer: a)
7. What type of canal characteristics construction of under drainage cross drainage works more > than any
other classification?
a) Side Slope Canal
b) Contour Canal
c) Watershed
Canal
d) Field
Channel
Answer: b)
8. Which of the following is a correct sentence?
a) Velocity of flow in canal depends on bed slope
b) Velocity depends on the density
c) Velocity of flow depends on lower level canal
d) Scouring velocity value in case for murum is 1 m/sec
Answer: a)
9. Velocity of flow by chezys formula is given by?
a) 𝐶𝐶𝐶𝐶√𝑅𝑅𝑅𝑅 × 𝑉𝑉𝑉𝑉
b) 𝐶𝐶𝐶𝐶√𝐶𝐶𝐶𝐶 × 𝐼𝐼𝐼𝐼
c) 𝐶𝐶𝐶𝐶√𝑅𝑅𝑅𝑅 × 𝐼𝐼𝐼𝐼
d) None
Answer: c)
10. What is the scouring velocity in for Clayey soil on earth?
a) 1 m/sec
b) 30 cm/sec
c) 1.4 m/sec
d) 50 cm/sec
Answer: d)
Medium : Based on Understanding of concepts.
11. Which type of canal need syphons?
a) Side Slope Canal
b) Contour Canal
c) Watershed Canal
d) Field Canal
Answer: c)
12. A water course having a command area on land of 1200 ha is required to irrigate Sugarcane with
intensity – 20% and Duty at head of watercourse in soil – 730 ha/cumec.Find Discharge in water
required ?
a) 0.267
b) 0.329
c) 0.520
d) 0.100
Answer: b)
13. Which of the points need to be
considered while fixing canal
alignment?
a) Cross Drainage works should be minimum
b) Alignment should be such that water should flow under gravity
c) It should cover maximum command area
d) all
Answer: d)
14. Loss of canal discharge occurs mainly due to?
a) Seepage and Percolation
b) Percolation and Absorption
c) Seepage and Evaporation
d) Seepage and Absorption
Answer: c)
15. Depends the major on what factor does the large lining of a canal can higher the capacity of the canal?
a) Width of the Canal
b) Type of Flow
c) Velocity
d) Side Slope
Answer: c)
16. The Thickness of lining of canal varies from?
a) 8-10m
b) 2.5-15 cm
c) 2.5 – 15 m
d) 7m
Answer: b)
17. What are the advantages of Canal Lining?
a) It controls water logging
b) It’s difficult to repair
c) Takes more time to complete work
d) None
Answers: a)
18. Which of the following is not a preventive measure for the maintenance of the
canal?
a) Strengthening of canal banks
b) Formation of berms by internal silting
c) Providing
cover
d) Silt
Removal
Answer: d)
19. Irrigation structure core constructed for carrying the water of canal safely under the
drainage water system supply are called
a) Cross Drainage works
b) Lining
c) Weir
d) None
Answer: a)
20. Which of these are a type of cross drainage works?
a) Weir
b) Extractor
c) Aqueduct
d) Ejector
Answer: c)
21. Which of the following statement is wrong?
a) A large linning canal is not suscept to erosion
b) The suggest of huge lining in low the danger of breaches of channel
c) The lining does not reduce the
money spent in removing weeds
d) Lining eliminates flood dangers
Answer: c)
22. Superpassage is provided at the
a) Crossing of river and big pipe where canal bed level is bigger than HFL of stream
b) Crossing of stream and canal where canal bed level is higher than HFL of
stream
c) Crossing of stream and canal where stream bed level is higher than HFL of canal
d) None of these
Answer: c)
23. Which type of alignment does the given figure represent?
a) Alignment of Side Slope Canal
b) Alignment of Contour Canal
c) Alignment of Watershed Canal
d) Alignment of Field Channel
Answer: b)
24. The Types of canal escapes are
a) Canal scouring escape
b) Surplus Escape
c) Tail Escape
d) All of these
Answer: d)
25. Fall or rapids are located on the of off-taking channel
a) Downstream
b) Upstream
c) Crest
d) far away
Answer: a)
26. A structure constructed in the main canal downstream of an off-take canal is called
a) Canal escape
b) Aqueduct
c) Cross regulator
d) Irrigation outlet
Answer: c)
27. Water-logging is caused by?
a) Low Rainfall
b) loosely packed soil
c) proper drainage
d) Construction of reservoir
Answer: d)
28. Which of the following isn’t causes of water logging?
a) Over irrigation by farmers under wrong impression that more water will fetch
more crop yield
b) Prevent seepage of water from reservoir
c) Natural obstruction to the flow of ground water
d) Seepage through reservoir
Answer: b)
29. What are the functions of irrigation outlets?
a) To admit water from distributary channel to field channel
b) To Draw proportionate quantity of silt
c) To measure the discharge released in field channel
d) All
Answer: d)
30. Which of these is a type of Falls?
a) Rapid Fall
b) Sudden Fall
c) Drop Down Fall
d) Circular Fall
Answer: a)
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