What is the type of flow called in which water particles rotate about their own mass centre while moving in the direction of flow?
Correct answer A. Rotational flow
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Water Management MCQs
Page 11 of Water Management multiple-choice questions with answers. Tap an option to check yourself.
Page 11 of 15
Which property explains why mercury does not wet glass?
Correct answer D. Surface tension
Which instrument measures the velocity of gases?
Correct answer A. Hot wire anemometer
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The hydraulic gradient line represents the sum of which heads?
Correct answer C. Pressure head + datum head
Where do liquid particles have maximum velocity in a pipe flowing full?
Correct answer B. Centre of the pipe
What is an earth embankment built along one or both sides of a river, some distance back from its banks, to control flooding called?
Correct answer D. Marginal embankment
What is the closed conduit that carries water under high pressure to a turbine to generate electricity called?
Correct answer D. Penstock
For smooth entry of water into a canal, at what angle is the head regulator kept relative to the direction of flow?
Correct answer A. 110°
For a given discharge, what is flow called when the total energy, the sum of potential, kinetic and pressure energies, is at a minimum?
Correct answer B. Critical flow
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What is the approximate depth of the root zone for rice?
Correct answer B. 90 cm
Hail is precipitation as balls or lumps of ice, formed by repeated freezing and melting, larger than what size?
Correct answer A. 5 mm diameter
What is the instrument for measuring pressure head, usually a small tube tapped into the side of a conduit, called?
Correct answer A. Piezometer
What is precipitation caused by frontal disturbances during the movement of a low-pressure system called?
Correct answer A. Cyclonic
What mainly resists the forces acting on a gravity dam?
Correct answer C. Self weight of the dam
What is the final stretch of a river before it enters the sea known as?
Correct answer C. Delta stage
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At what depth should velocity be measured with a current meter in a large canal to give the mean velocity?
Correct answer D. 0.6 depth
What causes cavitation?
Correct answer D. Low pressure
Which statement correctly defines a fluid?
Correct answer D. Cannot remain at rest under the action of any shear force
Which formula is used to calculate the maximum flood discharge for a hilly catchment?
Correct answer A. Nawab Jung Bahadur Ali formula
What is a dam that resists overturning by water pressure and uplift through its own weight called?
Correct answer C. Gravity dam