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This set of Irrigation Engineering Multiple Choice Questions & Answers (MCQs) focuses on Irrigation Engineering Set 11
Q1 | The earth's water circulatory system, is known as
- water cycle
- hydrologic cycle
- precipitation cycle
- all of these
Q2 | The discharge (Q) over trapezoidal crest of Sarda fall is
- same
- less
- more
Q3 | The channel after attaining its section and longitudinal slope, will be said to be in
- initial
- final
- permanent
Q4 | The ratio of the hed recovered to the head put in an outlet, is called
- proportionality
- flexibility
- sensitivity
- efficiency
Q5 | A diversion head work is constructed to
- raise water level at the head of the canal
- regulate the intake of water into the canal
- reduce fluctuations in the supply level of the river
- all of the above
Q6 | Irrigation canals are generally aligned along
- contour line
- water shed
- straight line
- valley line
Q7 | Kennedy gave his own formula for the determination of mean velocity.
- Correct
- Incorrect
Q8 | When the water is thrown into a well over a crest from where it escapes near its bottom, the type of fall is called
- rapid fall
- cylinder fall
- pipe fall
- glacis fall
Q9 | Cyclonic precipitation results from
- lifting of air masses converging into low pressure area
- natural rising of warmer, lighter air in colder and denser surrondings
- lifting of warm moisture-laden air masses due to topographic barriers
- all of the above
Q10 | Which of the following statement is wrong?
- In a trapezoidal notch fall, the top width of the notch is kept between 3/4th to full water depth above the sill of the notch.
- The energy dissipation takes palce by the provision of roughening devices.
- The siphon fall is designed to maintain a fixed supply level in the channel.
- Energy dissipators are provided for small discharges.
Q11 | The gaps created in the bank of a canal is called a breach.
- Correct
- Incorrect
Q12 | In Lane's weighted creep theory, he proposed a weight of
- three for vertical creep and one for horizontal creep
- three for horizontal creep and one for vertical creep
- two for vertical and two for horizontal creep
- any one of the above
Q13 | Escapes are also known as
- outlet
- safety valves
- regulators
Q14 | Inundation canals draw their supplies from rivers whenever there is a
- low
- high
- medium
Q15 | The setting for a hyper-proportional outlet is
- more
- same
Q16 | The method of irrigation used for orchards is
- free flooding
- border flooding
- check flooding
- basin flooding
Q17 | For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling.
- Right
- Wrong
Q18 | The ratio of the head recovered to the head put in an outlet, is called
- proportionality
- flexibility
- sensitivity
- efficiency
Q19 | Lining of a canal is necessary
- to minimise the seepage lossses in canal
- to prevent erosion of bed and sides due to high velocities
- to increase the discharge in canal section by increasing the velocity
- all of the above
Q20 | The movement of water through the soil surface into the soil, is called infilteration.
- Correct
- Incorrect
Q21 | Consumptive use of water by a crop is equal to
- the depth of water consumed by evaporation
- the depth of water consumed by transpiration
- the depth of water consumed by evaporation and transpiration during crop growth, including water consumed by accompanying weed growth
- none of the above
Q22 | The duty of irrigation water goes on
- increasing
- decreasing
Q23 | Which of the following is the correct sequence of the parts of a canal system?
- Head works, distributary, branch canals and minor.
- Head works, main canal, branch canal, distributary and minor.
- Head works, main canal, branch canal, minor and distributary.
- none of the above
Q24 | The alignment of a canal
- should be such, so as to ensure minimum number of cross drainage works
- on a water shed is the most economical
- should avoid valuable properties
- all of the above
Q25 | The berms provide additional strength to banks and thus make it safe against breaches.
- TRUE
- FALSE