Reference no: EM132751120

1. 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

2. Which method is time-consuming and expensive?

a) Tanks and Lysimeter

b) Vapour transfer method

c) Field plot method

d) Integration method

3. 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

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

a) True

b) False

5. 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

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 and its growth

7. 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

8. 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

9. The average value of Et/Ep for citrus crops?

a) 0.90

b) 0.7-1.10

c) 0.60

d) 0.66-1