Free Irrigation and Water Management MCQs with Answers
262 Irrigation and Water Management MCQs from Agriculture, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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262 questions · page 7 of 14
- A. H = v2/2g
- B. H = v/g
- C. H = v2 / g2
- D. H = v2 / g
Explanation: A Pitot tube converts velocity head into pressure head according to Bernoulli’s relation, h = v²/2g.
Correct answer: H = v2/2g- A. Absolute Humidity
- B. Relative Humidity
- C. Low humidity
- D. High Humidity
Explanation: Relative humidity is the ratio of the actual vapour pressure to the saturation vapour pressure at the same temperature, usually expressed…
Correct answer: Relative Humidity- A. Saturation vapour pressure
- B. Actual vapour pressure
- C. Saturation deficit
- D. Partial pressure
Explanation: Saturation deficit is calculated as saturation vapour pressure minus actual vapour pressure at the same temperature.
Correct answer: Saturation deficit- A. All are correct
- B. Saturation pressure
- C. Vapour pressure
- D. Partial pressure
Explanation: Partial pressure is the pressure exerted by one component of a gas mixture, such as water vapour in the atmosphere.
Correct answer: Partial pressure- A. Horton
- B. Darcy
- C. Lacy
- D. Kennedy
Explanation: Horton represented infiltration capacity as a curve that decreases rapidly after rainfall begins and then approaches a nearly constant…
Correct answer: Horton- A. Surface runoff
- B. True surface runoff
- C. Base flow
- D. Sub-surface runoff
Explanation: Water that travels directly over the land surface and reaches a stream quickly is termed true surface runoff.
Correct answer: True surface runoff- A. Develop
- B. Rehabilitate
- C. Remodel
- D. Manage
Explanation: Hydrology supplies the information needed to manage water resources by understanding their recharge, movement, storage, and depletion.
Correct answer: Manage- A. Compound curve
- B. Composite curve
- C. Double curve
- D. All are correct
Explanation: A compound curve is made from two or more circular arcs of different radii bending in the same direction and joined by a common tangent.
Correct answer: Compound curve129. That point in a body at which it will balance if loaded or supported is called ____________________?
- A. Centre of pressure
- B. Centre of gravity
- C. Centre of mass
- D. Mass centre
Explanation: The centre of gravity is the point through which the body's weight acts, so the body balances when supported at that point.
Correct answer: Centre of gravity- A. Mass curve
- B. Volume curve
- C. Capacity curve
- D. All are correct
Explanation: A capacity curve relates the water level of a reservoir or tank to the volume of water stored at that level.
Correct answer: Capacity curve- A. Dry weather flow
- B. Municipal flow
- C. Waste water flow
- D. Surface flow
Explanation: Dry-weather flow is the flow present in a drain during periods without rainfall or irrigation runoff, consisting mainly of sanitary sewage…
Correct answer: Dry weather flow- A. E2 - E1
- B. E2 / E1
- C. E1 - E2
- D. E1 / E2
Explanation: Hydraulic-jump efficiency is the ratio of energy remaining after the jump to energy before it, E2/E1.
Correct answer: E2 / E1- A. Far from
- B. Below
- C. Within
- D. Near
Explanation: Waterlogging occurs when the water table rises within the root zone, filling soil pores and restricting air available to roots.
Correct answer: Within- A. D0.67
- B. D0.65
- C. D0.66
- D. D0.64
Explanation: Kennedy's silt theory gives critical velocity as proportional to D^0.64, where D is the flow depth.
Correct answer: D0.64135. Canals normally excavated directly from river without head regulator is called___________________?
- A. Perennial canals
- B. Inundation canals
- C. Non-perennial canals
- D. Water shed canals
Explanation: An inundation canal is taken directly from a river and generally has no head regulator, so its supply depends on the river's water level.
Correct answer: Inundation canals- A. Silt grade, charge and slope
- B. Sediment size
- C. Channel dimensions
- D. Silt amount and bed slope
Explanation: A channel's discharge capacity is primarily determined by its cross-sectional dimensions, together with slope and roughness.
Correct answer: Channel dimensions- A. Buckling
- B. Turning
- C. Sinking
- D. Shear
Explanation: An earth dam on cohesionless silt must be checked mainly for shear stability, including the possibility of sliding along or within the…
Correct answer: Shear138. The lower limit of factor of safety against over turning in a gravity is _______________________?
- A. 1.3
- B. 1.4
- C. 1.5
- D. 1.6
Explanation: A factor of safety of 1.5 is commonly used as the minimum against overturning for a gravity dam under ordinary design conditions.
Correct answer: 1.5- A. Proportionally
- B. flexibility
- C. Sensitivity
- D. Flow abili
Explanation: Flexibility is the ratio of the relative change in outlet discharge to the relative change in distributary discharge.
Correct answer: flexibility- A. Non-artesian
- B. Perched
- C. Artesian well
- D. Un-confined
Explanation: An artesian well taps a confined aquifer enclosed between relatively impermeable layers above and below.
Correct answer: Artesian well