Irrigation Engineering Set 11

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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