Irrigation Engineering The uplift pressure on a dam can be controlled byi) constructing cutoff under upstream faceii) constructing drainage channels between the dam and its foundationiii) by pressure grouting in foundationThe corret answer is both (i) and (iii) both (i) and (ii) only (i) (i), (ii) and (iii) both (i) and (iii) both (i) and (ii) only (i) (i), (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering For a flood control reservoir, the effective storage is equal to useful storage + surcharge storage + valley storage useful storage + surcharge storage useful storage + surcharge storage -valley storage useful storage – valley storage useful storage + surcharge storage + valley storage useful storage + surcharge storage useful storage + surcharge storage -valley storage useful storage – valley storage ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If the irrigation efficiency is 80%, conveyance losses are 20% and the actual depth of watering is 16 cm, the depth of water required at the canal outlet, is 15 cm 20 cm 25 cm 10 cm 15 cm 20 cm 25 cm 10 cm ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Cross regulators in main canals are provided To increase water head upstream when a main canal is running with low supplies To regulate water supply in the distributaries To overflow excessive flow water None of these To increase water head upstream when a main canal is running with low supplies To regulate water supply in the distributaries To overflow excessive flow water None of these ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering While deciding the alignment of a proposed canal taking off from a river at B, three alignments of approximately equal lengths are available. These cross a drainages at C1, C2 and C3 where drainage bed levels C1 > C2 > C3, you will provide at site C3 A syphon aqueduct An aqueduct A super passage A syphon A syphon aqueduct An aqueduct A super passage A syphon ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by (0.9)00 (0.99)10 1 – (0.99)10 l-(0.9)100 (0.9)00 (0.99)10 1 – (0.99)10 l-(0.9)100 ANSWER DOWNLOAD EXAMIANS APP
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