Explore topic-wise MCQs in Irrigation Engineering.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

Determine the pan evaporation from the following data using the Christiansen method.Extra-terrestrial radiation in cm = 47.3cmCoefficient of temperature(Ct) = 1.403Coefficient for wind velocity (Cw)= 1.2Coefficient for relative humidity (Ch) = 1Coefficient for percent of possible sunshine(Cs) = 1.073Coefficient of elevation(Ce) = 1.014

A. 40 cm
B. 30.44 cm
C. 39.8 cm
D. 37.98 cm
E. = 1.014a) 40 cmb) 30.44 cmc) 39.8 cmd) 37.98 cm
Answer» D. 37.98 cm
2.

The monthly consumptive use is given by _____________

A. Cu = k.p/40 [1.8t + 32]
B. Cu = k.p/40 [1.8t – 32]
C. Cu = k.p/40 [t + 32]
D. Cu = k.p/40 [t – 32]
Answer» B. Cu = k.p/40 [1.8t – 32]
3.

The average value of Et/Ep for citrus crops?

A. 0.9
B. 0.7-1.10
C. 0.60
D. 0.66-1
Answer» D. 0.66-1
4.

Which method is widely used in India for the computation of consumptive use?

A. Penman’s equation
B. Hargreaves – Christiansen equation
C. Blaney-Criddle equation
D. Tanks and lysimeter
Answer» B. Hargreaves – Christiansen equation
5.

What is the range of reflection coefficient for close-grained crops?

A. 0.15-0.25
B. 0.05-0.45
C. 0.05
D. 0.45-0.90
Answer» B. 0.05-0.45
6.

Which of the following statement is wrong about consumptive use coefficient?

A. It is different for different crops
B. It varies with the crop growth
C. It is different for the same crop at different places
D. It is independent of the crop type and its growth
Answer» E.
7.

The monthly consumptive use values for paddy are 26.69, 8.76, 14.38, 22.73, 21.29, 25.50 and 15.06 for the duration of month from June to July. What is the average daily consumptive use?

A. 7.0 mm
B. 8.0 mm
C. 7.5 mm
D. 8.5 mm
Answer» D. 8.5 mm
8.

The evapotranspiration rate is higher in light green vegetation than in dark green vegetation.

A. True
B. False
Answer» C.
9.

Which of the following is not an empirical method of determining consumptive use?

A. Lowry Johnson method
B. Penman’s equation
C. Hargreaves method
D. Inflow-outflow method
Answer» E.
10.

Which method is time-consuming and expensive?

A. Tanks and Lysimeter
B. Vapour transfer method
C. Field plot method
D. Integration method
Answer» B. Vapour transfer method
11.

Which formula is extensively used for estimating seasonal water requirements?

A. Blaney-Criddle formula
B. Hargreaves pan evaporation method
C. Penman’s equation
D. Christiansen formula
Answer» B. Hargreaves pan evaporation method