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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Test  >  GATE 2027 Mock Test Series  >  Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Civil Engineering (CE) MCQ

GATE Civil Engineering (CE) 2027 Test: Gravity Dams, Earthen Dams & Rock


MCQ Practice Test & Solutions: Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 (8 Questions)

You can prepare effectively for Civil Engineering (CE) GATE Civil Engineering (CE) 2027 Mock Test Series with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2". These 8 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 8

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Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 1
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A gravity dam is to be designed as a high dam if it’s height h is as follows:
where fc = permissible comp, stress, μ, W and Ss have their usual meaning

Detailed Solution: Question 1

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 2
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In modern practice the free board normally provided for gravity dam is

Detailed Solution: Question 2

Fine board is provided in gravity dam is normally 3/2 hw or 4-5% of the dam material.

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Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 3
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Consider the following statements :
Phreatic line in an earth dam is
1. elliptical in shape
2. an equipotential line
3. the top-most flow line with zero water pressure
4. approximately a parabola

Which of these Statements are correct?

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 4
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The down stream slope of an earthen dam is critical when

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 5
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The safe base width B of an elementary gravity dam profile using stability or sliding criteria is given by
where:
h = height of dam;
C = uplift pressure coefficient.
Others have usual meaning

Detailed Solution: Question 5

Solution:
  • Given:
    • Height of the dam (h)
    • Uplift pressure coefficient (C)
    • Other terms have their usual meaning.
  • Step 1: Safe base width calculation
    • The base width of a gravity dam is determined to ensure stability against sliding and overturning.
    • Safe base width depends on the uplift pressure coefficient and the density ratio.
  • Step 2: Analyze the formula
    • The correct formula for the safe base width is given by:

      B = h / √(ρ - C)

    • This ensures that the uplift force is accounted for, maintaining the dam's stability.
Final Answer:

a) B = h / √(ρ - C)

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 6
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When a reservoir is full, the maximum compressive stress in gravity-dam occurs

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 7
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An earthquake acceleration of 0.1 g acting vertically downward causes in a gravity dam

Detailed Solution: Question 7

Effective unit weight is given by,

so when αv = 0.1 g (downward)
effective unit weight

Net effective weight of Dam 

Test: Gravity Dams, Earthen Dams & Rock Fill Dams - 2 - Question 8
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What is the height of wave which is likely to be generated by a wind of 80 km/hr in a reservoir having a fetch of 50 km?

Detailed Solution: Question 8

Waves are generated on the surface of reservoir by the blowing winds, which causes a pressure towards the downstream side. Wave pressure depends upon the wave, height. Wave height in metres may be given by the equation.

where V is wind velocity in km/hr and F is fetch in km.
∴  

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About this Civil Engineering (CE) Practice Test

This test contains 8 MCQs on Gravity Dams, Earthen Dams & Rock Fill Dams - 2 with detailed solutions for each question. It is part of the GATE Civil Engineering (CE) 2027 Mock Test Series course on EduRev, designed to align with the current Civil Engineering (CE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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