agriculture MCQs – Page 199

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

3961. The piezometric level of water in the well at zero discharges is called___________________?
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A. Static water level

B. Full supply level

C. Water table

D. All are correct

3962. velocity of gases is measured with a _____________________?
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A. Barometer

B. Hot wire manometer

C. Hot wire anemometer

D. All are correct

3963. if the depth of water in an open channel is greater than the critical depth, the flow is called________________?
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A. Non-critical flow

B. Critical depth

C. Shooting flow

D. Sub-critical flow
3964. The velocity in a large canal or channel measured at a depth of ___________________ gives the mean velocity using the current meter?
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A. 0.6m

B. 0.5 depth

C. 0.5m

D. 0.6 depth
3965. The delta the total water requirement of crop from the time of sowing to harvesting the delta of sugarcane is __________________?
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A. 100cm

B. 70cm

C. 80cm

D. 120cm
3966. Development of___________in river is due to meandering ?
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A. Turbulence

B. Critical velocity

C. Cutoff

D. Delta

3967. A flow in which velocity of water particles is same at all sections is called ____________________?
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A. Steady flow

B. Compressible flow

C. Uniform flow

D. Laminar flow

3968. An area is officially declared as drought effected if the mean Annual rain fall is less than of the annual Potential evaporation,______________?
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A. 70%

B. 85%

C. 75%

D. 80%

3969. Out/ of a well water is more than canal water because____________________?
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A. Well water is used economically

B. Conveyance losses in well irrigation are less

C. Lifting of water increase cost of well water

D. Well water is clear than canal water

3970. In case of silt deposition in the dam reservoir to dispose of the effectively ________________ be used?
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A. All are correct

B. Vortex pipes

C. Silt excluders

D. Silt ejectors

3971. The law that states that the discharge of sub-soil water is directly proportional to the loss of head and the area of soil sample and inversely proportional to to the length of soil sample ___________________?
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A. Darcys law

B. Thiems law

C. Archimeds principle

D. Permeability law

3972. Weep holes are provided in canal lining to _____________________?
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A. Have drainage facility

B. Give additional anchorage against sliding

C. improve strength of lining

D. Provide water into branch canals

3973. The ratio of specific weight of any liquid to the specific weight of water is called as _________________?
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A. Density of water

B. Density of liquid

C. Specific gravity of water

D. Specific gravity of liquid
3974. Water storage efficiency in the root zone depends upon__________________?
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A. Fine particles of soil

B. Climatic conditions

C. Coarse particles of soil

D. Porosity
3975. The discharge over a rectangular notch is determined by _____________________?
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A. 2/3 cd. B (2g) 1/2 H3/2

B. 2/3 cd. b (2 gh) 1/2

C. 2/3 cd. b (2g) 1/2 H 5/2

D. 2/3 cd. B (2g) 1/2 H

3976. The falling drop of rainwater become spherical due to _________________?
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A. Capillary

B. Compressibility

C. Surface Tension

D. None of these

3977. From a water fall, if water is falling down at the rate of 100 N/sec: on the blades of a turbine when the height of fall is 100 m the power delivered to turbine will be______________?
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A. 100 kw

B. 10,000 kw

C. 1000 kw

D. 5000 kw

3978. A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it __________________?
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A. All of these

B. Involves lesser excavation

C. Has minimum wetted perimeter

D. Gives max. Discharge

3979. An instrument used for measuring pressure head, generally made up of a small pipe tapped into the side of conduit is called ___________________?
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A. Piezometer

B. Manometer

C. Pilot tube

D. All are correct

3980. hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?
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A. 15 mm diameter

B. 10 mm diameter

C. 20 mm diameter

D. 5 mm diameter