A. pressure difference
B. temperature difference
C. natural topographical barriers
D. all of the above
Related Mcqs:
- The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be___________________?
A. 70mm
B. 80mm
C. 90 mm
D. 105 mm - The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annua! precipitation over the above basin of 250 square km will be__________________?
A. 50 cm
B. 55 cm
C. 56 cm
D. 60 cm - The flow-mass curve is graphical representation of__________________?
A. cumulative discharge and time
B. discharge and percentage probability of flow being equaled or exceeded
C. cumulative discharge, volume and time in chronological order
D. discharge and time in chronological order - If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that______________?
A. demand cannot be met by inflow
B. reservoir was not full at the beginning
C. both (A) and (B)
D. none of the above - The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________?
A. direct runoff volume
B. period of storm
C. total rainfall
D. none of the above - Hydrodynamic pressure due to earthquake acts at a height of_________________?
A. 3H/47I above the base
B. 3H747t below the water surface
C. 4H/371 above the base
D. 4H737t below the water surface where H is the depth of water - The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?
A. less than 1
B. equal to 1
C. greater than 1
D. equal to zero - A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If <j) index remains at the same value, the runoff due to 10 cm of rainfall in 12 hours in the catchment is___________________?
A. 4.5 cm
B. 6.0 cm
C. 7.5 cm
D. 9.0 cm - 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 - Horizontal acceleration due to earthquake results in______________?
A. hydrodynamic pressure
B. inertia force into the body of the dam
C. both (A) and (B)
D. none of the above
