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1) A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called_______________________? a. Head Regulator b. Cross-Regulator c. Escape d. All are correct
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2) When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________________? a. High flood level b. Dangerous condition c. Hydraulic design condition d. Worst condition
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3) A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________? a. Water wave b. Water tide c. Hydraulic jump d. Afflux
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4) The hydraulic jump is formed on down stream of toe of glacis for the purpose to dissipate surplus energy of the flowing water, the nature and strength of jump depends upon a Number called______________________? a. Reynolds b. Froude No c. Webber d. Darcy,s law
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5) According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called ______________________? a. Creep length b. Seeping length c. Piping d. Undermining
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6) The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called ______________________? a. Hydraulic gradient b. Head loss c. Creep length d. Exit gradient
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7) To keep the Hydraulic structure safe against undermining the ________________ should be safe? a. Exit gradient b. Hydraulic gradient c. Creep length d. Critical exit gradient
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8) According to Mr. Khosla, the seeping water creates undermining and the undermining starts from__________________? a. Down stream to up stream b. Up stream to down stream c. Top to bottom d. Bottom to top
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9) Khosla provided a seepage theory for design of Hydraulic structures called________________? a. Theory of seepage b. Method of independent variables c. Method of cutoffs d. Creep theory
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10) The invented filter is provided just after the end of concrete floor to reduce () possibility of _________________? a. Piping b. Under mining c. Up thrust d. a and b are correct
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11) The inverted filter consists layer of materials of increasing ______________ from bottom to top? a. Piping b. Under mining c. Permeability d. Up thrust pressure
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12) The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory__________________? a. Lane b. Darcy c. Khosla d. All are correct
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13) A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called _________________? a. Modular b. Non-modular c. Semi-modular d. Semi – Rigid
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14) When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________? a. Sensitive b. Flexible c. Proportional d. Non-flexible
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15) When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________? a. Aqueduct b. Syphon-aqueduct c. Cross-Drainage d. Non-gravity structure
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16) When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called _____________________? a. Super passage b. Syphon – Aqueduct c. Canal-syphon d. Aqueduct
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17) An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called ___________________? a. Inlet b. Out let c. entrance d. Mixing
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18) Mostly the salt of calcium and Magnesium can not cause ________________? a. Salinity b. Alkalinity c. Poisoning d. Turbidity
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19) The water in swimming pools can be ____________ by using any one from the following, chlorine-ultraviolet rays and bromine t ? a. Disinfected b. Infected c. Cleaned d. Iodized
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20) A digging out of earth to make trench for any engineering purpose is called ______________________? a. Excavation b. Cavitations c. borrow pitting d. Earth filling
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