Download GTU BE/B.Tech 2019 Winter 7th Sem Old 170602 Irrigation Engineering Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem Old 170602 Irrigation Engineering Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (Old) EXAMINATION ? WINTER 2019
Subject Code: 170602 Date: 26/11/2019

Subject Name: Irrigation Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Explain with neat sketch the components of diversion headwork. 07
(b) Discuss the suitability, advantages and limitation of Drip and Sprinkler irrigation
techniques.
07

Q.2 (a) Discuss causes, effects and controls of Water Logging. 07
(b) Derive the relation between Duty, Delta and Base period. Also, discuss briefly
the factors affecting and methods to improve duty.
07
OR
(b) Following particulars were recorded from an agricultural field growing wheat: i)
Field Capacity=25%, wilting point=9%, permissible depletion of moisture
content=55 %, root zone depth= 2.1 m, dry unit weight of soil= 1400 Kg/m
3
,
effective rainfall= 25 mm, daily consumptive use= 5.8 mm. Find the net and field
irrigation requirement if loss in field application is 12 %. What is the frequency
of irrigation?
07

Q.3 (a) Describe Khosla?s theory and give corrections for i) thickness of floor ii) sloping
floor.
07
(b) Discuss the necessity and advantages of canal lining. 07
OR
Q.3 (a) Explain the Kennedy?s theory of irrigation channel design. 07
(b) A channel section is to be designed for the following data: discharge=7 cumecs,
Silt factor, f= 0.9, Side slope= ? (H): 1 (V). Also determine the bed slope of the
channel.
07

Q.4 (a) Explain following in context of irrigation: (i) Distribution efficiency (ii)
Application efficiency (iii) Project efficiency
07
(b) Describe with suitable sketch the layout of barrage and discuss each component. 07
OR
Q.4 (a) What is consumptive use of water? Describe any one method of determining the
consumptive use of water.
07
(b) Describe with neat sketches various methods adopted for controlling seepage
through the body of an embankment dam and through foundation.
07

Q.5 (a) Explain the working of aqueduct and siphon aqueduct with neat sketch. 07
(b) Discuss the effects of uplift pressure at the floor of the culvert and methods to
reduce it.
07
OR

Q.5 (a) Describe the type of canal falls with sketch. Discuss suitability of each method
and the need of cistern below the canal fall.
07
(b) Describe the following: i) Silt Control Devices ii) Sheet Piles 07

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