Irrigation Engineering Set 12

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This set of Irrigation Engineering Multiple Choice Questions & Answers (MCQs) focuses on Irrigation Engineering Set 12

Q1 | Garret's diagram gives the graphical method of designing a channel based on
  • Lacey's theory
  • Gibb's theory
  • Kennedy's theory
  • Khosla's theory
Q2 | The fall which can be used as a meter fall, is
  • vertical drop fall
  • flumed glacis fall
  • unflumed glacis fall
  • none of these
Q3 | A canal aligned roughly at right angles to the contours of the country is called ridge canal.
  • TRUE
Q4 | According to Fanning's formula, the flood discharge (Q) in cumecs is given by
  • Q = CA2/3
  • Q = CA3/4
  • Q = CA5/6
  • Q = CA7/8
Q5 | Super-fluous water is also called
  • capillary water
  • gravitational water
  • hygroscopic water
  • all of these
Q6 | The hydrology is a science which deals with the
  • occurrence of water on the earth
  • distribution of water on the earth
  • movement of water on the earth
  • all of these
Q7 | The ratio between the depths of water levels over crest on the downstream and upstream of the module, is known as
  • flexibility
  • sensitivity
  • drowning ratio
  • module ratio
Q8 | The duty of irrigation water will be less if
  • area irrigated is more
  • water supply required is less
  • water supply required is more
  • none of these
Q9 | The width and length of mender as well as width of river, vary approximately with
  • discharge
  • square of discharge
  • square root of discharge
  • cube root of discharge
Q10 | In the case of a proportional outlet, the setting is equal to the ratio of outlet index to the channel index.
  • Correct
  • Incorrect
Q11 | The cylinder or well fall is quite suitable and economical for
  • low discharges and low drops
  • low discharges and high drops
  • high discharges and low drops
  • high discharges and high drops
Q12 | The setting of an outlet is defined as the ratio of the
  • rate of change of discharge of an outlet to the rate of change of discharge of the distributing channel
  • rate of change of discharge of an outlet to the rate of change in level of the distributing surface, referred to normal depth of the channel
  • depth of the sill or the crest level of the module below the full supply of the distributing channel to the full supply depth of the distributing channel
  • head recovered to the head put in an outlet
Q13 | A sudden fall of level of ground along the alignment of a canal joined by an inclined bed is called a
  • rapid fall
  • cylinder fall
  • sudden fall
  • hydraulic jump
Q14 | Capillary water is a useful soil moisture for the growth of plants.
  • Yes
  • No
Q15 | The area in which crop is grown at a particular time or crop season, is called
  • gross commanded area
  • culturable commanded area
  • culturable uncultivated area
  • none of these
Q16 | The standard height of a standard rain gauge is
  • 10 cm
  • 20 cm
  • 30 cm
  • 40 cm
Q17 | The saturation gradient in an ordinary loam soil is
  • 1 ; 1
  • 2 ; 1
  • 3 ; 1
  • 4 ; 1
Q18 | The field capacity of a soil depends upon
  • capillary tension in soil
  • porosity of soil
  • either (a) or (b)
  • both (a) and (b)
Q19 | For the repairing of an old but sound concrete lining, the lining preferred is
  • shotcrete lining
  • precast concrete lining
  • soil cement lining
  • sodium carbonate lining
Q20 | The term balancing depth has the same meaning as the depth of water in canal.
  • Right
  • Wrong
Q21 | When the critical velocity ratio is less than one, the channel is said to be in silting.
  • TRUE
Q22 | For potato, sugarcane and groundnut, the furrow method of irrigation is adopted.
  • Yes
  • No
Q23 | Where steep land is available, the method of irrigation adopted is
  • free flooding
  • border flooding
  • check flooding
  • basin flooding
Q24 | A channel is said to be in scouring when the critical velocity ratio is
  • equal to
  • less than
  • greater than
Q25 | In case of small channels, the borrow pits should start from a distance not less than
  • 2 m
  • 3 m
  • 4 m
  • 5 m