The most economical central angle of an arch dam is made at ___________________?
A. 123º
B. 133!
C. 143º
D. 153º
Water Management
A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?
A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?
A. Fish ladder
B. Fish escape
C. Fish pool
D. Fish pond
Net irrigation + field irrigation losses are the requirement of _____________________?
Net irrigation + field irrigation losses are the requirement of _____________________?
A. Full irrigation
B. Field irrigation
C. Furrow irrigation
D. Basin irrigation
The method of irrigation in which each tree is surrounded by a border to form a pool when water is supplied is called ________________?
The method of irrigation in which each tree is surrounded by a border to form a pool when water is supplied is called ________________?
A. Furrow irrigation
B. Basin irrigation
C. Border irrigation
D. Check irrigation
Land containing high percentage of alkalies may be reclaimed by addition of_____________________?
Land containing high percentage of alkalies may be reclaimed by addition of_____________________?
A. Caso4
B. Gypsum
C. Chemicals
D. Caco3
If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?
If the duration of a unit hydrograph approaches zero, the resulting unit hydrograph is called __________________?
A. Instantaneous unit hydrograph
B. Intensity unit hydrograph
C. Unit hydrograph
D. Unit hyetgoraph
A plot of graphical representation showing river flow against time is called _____________________?
A plot of graphical representation showing river flow against time is called _____________________?
A. Monograph
B. Hyetograph
C. Hydrograph
D. All are correct
the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called ___________________?
the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called ___________________?
A. Evapotranspiration
B. Transpiration
C. Evaporation
D. All are correct
The centre of pressure of a plane submerged area which holds it in equilibrium is ____________________?
The centre of pressure of a plane submerged area which holds it in equilibrium is ____________________?
A. Always below the centre of gravity of the area
B. Coincident with centroid of area if its plane is vertical
C. Always above the centroid of the area
D. Independent of the inclination of area
generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
A. 100%
B. 80%
C. 50% l
D. 20%