irrigation water resources engineering and hydrology MCQs – Page 7

Practise focused irrigation water resources engineering and hydrology questions with marked answers for exam preparation and subject revision.

irrigation water resources engineering and hydrology Mcqs
121. Presence of tail water in a gravity dam_____________?
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A. increases the shear stress

B. decreases the shear stress</strong>

C. increases the principal stress

D. correct answer is

E. decreases the principal stress

122. The shape of recession limb of a hydrograph depends upon________________?
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A. basin characteristics only

B. storm characteristics only

C. both (A) and (B)

D. none of the above

123. Variability of rainfall is____________?
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A. correct answer is?

B. largest in coastal areas

C. largest in regions of scanty rainfall</strong>

D. largest in regions of high rainfall
124. Hydrograph is the graphical representation of________________?
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A. rainfall and time

B. surface runoff and time

C. runoff and time

D. ground waterflow and time

125. A raingauge should preferably be fixed________________?
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A. in an open space

B. under the tree

C. in a closed space

D. near the building

126. The aqueduct or superpassage type of works are generally used when_______________?
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A. none of the above

B. high flood drainage discharge is large and short lived

C. high flood drainage discharge is small

D. high flood drainage discharge is large and continues for a long time

127. Lining of irrigation channels________________?
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A. increases the waterlogging area

B. decreases the waterlogging area

C. none of the above

D. does not change the water logging area

128. Which of the following can be used as a meter fall ?
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A. unflumed glacis fall

B. all of the above

C. vertical drop fall

D. flumed glacis fall

129. Interception losses are due to_______________?
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A. stream flow

B. evaporation

C. correct answer is?

D. transpiration

130. Select the incorrect statement ?
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A. all of the above

B. Extensive irrigation should be adopted in areas susceptible to water logging

C. Intensive irrigation should be avoided in areas susceptible to water logging

D. Lift irrigation increases water logging
131. The relation between probability (P) and recurrence interval (T) is given by_________________?
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A. P/T = 1

B. PT2 = 1

C. P/T2 = 1

D. PT = 1
132. For a flood control reservoir, the effective storage is equal to_______________?
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A. useful storage valley storage

B. useful storage + surcharge storage -valley storage

C. useful storage + surcharge storage + valley storage

D. useful storage + surcharge storage

133. The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be_________________?
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A. 1172 hectares/m3/sec

B. 637 hectares/m3/sec

C. 972 hectares/m3/sec

D. 837 hectares/m3/sec

134. A deep well_________________?
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A. is always deeper than a shallow well

B. has more discharge than a shallow well

C. is weaker structurally than a shallow well

D. both (A) and (B)

135. When surface of transpiration is submerged under water, then potential evapotranspiration is________________?
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A. equal to evapotranspiration

B. much more than evapotranspiration

C. much less than evapotranspiration

D. equal to or less than evapotranspi-ration

136. For a catchment area of 120 km2, the equilibrium discharge in m3/hour of an S-curve obtained by the summation of 6 hour unit hydro graph is_______________?
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A. 7.2 xlO6

B. 0.2 x 106

C. 2.4 xlO6

D. 0.6 x 106