Civil Engineering
GATE CE branch:ce PYQs
Build your understanding with focused practice from past exam papers.
Questions 991–1000 of 1300. Imported answers require independent review unless marked reviewed.
Question 31
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The cross-section of a built-up wooden beam as shown in the figure (not drawn to scale) is subjected to a vertical shear force of 8 kN. The beam is symmetrical about the neutral axis (N.A.) shown, and the moment of inertia about N.A. is
. Considering that the nails at the location P are spaced longitudinally (along the length of the beam) at 60 mm, each of the nails at P will be subjected to the shear force of 
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In the context of provisions relating to durability of concrete, consider the following assertions:
Assertion (1): As per IS 456-2000, air entrainment to the extent of 3% to 6% is required for concrete exposed to marine environment.
Assertion (2): The equivalent alkali content (in terms of Na₂O equivalent for a cement containing 1% and 0.6% of Na₂O and K₂O, respectively, is approximately 1.4% (rounded to 1 decimal place).
Which one of the following statements is CORRECT?
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The rigid-jointed plane frame QRS shown in the figure is subjected to a load
at the joint R. Let the axial deformations in the frame be neglected. If the support S undergoes a settlement of
, the vertical reaction at the support S will become zero when
is equal to 
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Chlorine is used as the disinfectant in a municipal water treatment plant. It achieves 50 percent disinfection efficiency measured in terms of killing the indicator microorganisms (E-Coli) in 3 minutes. The minimum time required to achieve 99 percent disinfection efficiency would be
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If the section shown in the figure turns from fully-elastic to fully-plastic, the depth of neutral axis (N.A.),
, decreases by 
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A camera with a focal length of 20 cm fitted in an aircraft is used for taking vertical aerial photographs of a terrain. The average elevation of the terrain is 120 m above mean sea level (MSL). What is the height above MSL at which an aircraft must fly in order to get the aerial photographs at a scale of 1:8000?
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Sedimentation basin in a water treatment plant is designed for a flow rate of
. The basin is rectangular with a length of 32 m, width of 8 m and depth of 4 m. Assume that the settling velocity of these particles is governed by the Stokes’ law. Given: density of the particles =
; density of water =
; dynamic viscosity of water =
; gravitational acceleration =
. If the incoming water contains particles of diameter
(spherical and uniform), the removal efficiency of these particles isYour answerChoose one option.
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A flexible pavement has the following class of loads during a particular hour of the day.
i. 80 buses with 2-axles (each axle load of 40 kN)
ii. 160 trucks with 2-axles (front and rear axle loads of 40 kN and 80 kN, respectively)
The equivalent standard axle load repetitions for this vehicle combination as per IRC:37-2012 would be
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A survey line was measured to be 285.5 m with a tape having a nominal length of 30 m. On checking, the true length of the tape was found to be 0.05 m too short. If the line lay on a slope of 1 in 10, the reduced length (horizontal length) of the line for plotting of survey work would be
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The inverse of the matrix
isYour answerChoose one option.
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