31. A current meter is used to measure the__________________?
A. velocity of flow of water
B. depth of flow of water
C. discharge
D. none of the above
✅ The correct answer is option A.
Irrigation, Water Resources Engineering and Hydrology MCQs
32. Hydrograph is the graphical representation of________________?
A. runoff and time
B. surface runoff and time
C. ground waterflow and time
D. rainfall and time
✅ The correct answer is option A.
33. Irrigation water having the concentration of Na++ , Ca++ and Mg++ as 20, 3 and 1 Milli equivalent per litre respectively will be classified as__________________?
A. low sodium water
B. medium sodium water
C. high sodium water
D. very high sodium water
✅ The correct answer is option B.
34. A hyetograph is a graphical representation of___________________?
A. rainfall intensity and time
B. rainfall depth and time
C. discharge and time
D. cumulative rainfall and time
✅ The correct answer is option A.
35. The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by_____________?
A. (0.99)10
B. 1 – (0.99)10
C. (0.9)’00
D. l-(0.9)100
✅ The correct answer is option B.
36. In case of non-availability of space due to topography, the most suitable spillway is________________?
A. straight drop spillway
B. shaft spillway
C. chute spillway
D. ogee spillway
✅ The correct answer is option B.
37. The sensitivity of a rigid module is_______________?
A. zero
B. between zero and one
C. 1
D. infinity
✅ The correct answer is option A.
38. Vertical drop fall is satisfactory for a height upto ___________?
A. 0.5 m
B. 1.5 m
C. 3.5 m
D. 5.0 m
✅ The correct answer is option B.
39. The relation between probability (P) and recurrence interval (T) is given by_________________?
A. PT = 1
B. PT2 = 1
C. P/T = 1
D. P/T2 = 1
✅ The correct answer is option A.
40. The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as__________________?
A. water conveyance efficiency
B. water application efficiency
C. water use efficiency
D. none of the above
✅ The correct answer is option B.