Irrigation Engineering [1]
116) The berms are provided in canals if these are
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(a) fully in excavation
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(b) party in excavation and partly in embankment
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(c) fully in embankment
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(d) all of the above
117) Which of the following statements is wrong ?
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(a) The top of dowel is kept above the free supply level by a margin of free board.
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(b) The dowels are provided as a measure of safety for automobiles driven on the service roads.
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(c) The dowels act as curbs on the side of roadway towards the canal.
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(d) none of the above
118) The free board in a channel is governed by the
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(a) size of the canal
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(b) location of the canal
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(c) water surface fluctuations
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(d) all of the above
119) The berms provide additional strength to banks and
thus make it safe against breaches.
120) The saturation gradient in an ordinary loam soil is
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(a) 1 : 1
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(b) 2 : 1
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(c) 3 : 1
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(d) 4 : 1
