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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
- FALSE
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
- FALSE
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