Civil Engineering
2025 · Paper 2
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CE 2025 Paper 2 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 31
Open questionCENAT1 markNeeds review
From a flow-net diagram drawn under a concrete dam, following information are obtained: (i) The head difference between upstream and downstream side of the dam is 9 m. (ii) The total number of equipotential drops between upstream and downstream side of the dam is 10. (iii) The length of the field nearest to the toe of the dam in the downstream side is 1 m.
If the soil below the dam is having a saturated unit weight of 21 kN/m
and unit weight of water is 9.81 kN/m
, then the factor of safety against the quick condition will be _____ (round off to two decimal places).Log in to check the answer
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Open questionCENAT1 markNeeds review
A 6 m thick clay stratum has drainage at both its top and bottom surface due to the presence of sand strata. The time to complete 50% consolidation is 2 years. The coefficient of volume change (m
) is 1.51×10
m
/kN and unit weight of water is 9.81 kN/m
.The coefficient of permeability (in m/year) is _____ (round off to three decimal places).
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 33
Open questionCENAT1 markNeeds review
Consider steady flow of water in the series pipe system shown below, with specified discharge. The diameters of Pipes A and B are 2 m and 1 m, respectively. The lengths of pipes A and B are 100 m and 200 m, respectively. Assume the Darcy-Weisbach friction coefficient, f as 0.01 for both the pipes.
The ratio of head loss in Pipe-B to the head loss in Pipe-A is _____ (round off to the nearest integer).
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