Civil Engineering
GATE CE discipline:civil-and-environmental-engineering PYQs
Build your understanding with focused practice from past exam papers.
Questions 101–110 of 1300. Imported answers require independent review unless marked reviewed.
Question 51
Open questionCENAT2 marksNeeds review
A homogeneous, linearly elastic rod AB is connected to a linearly elastic spring BC in between the fixed supports at A and C, as shown in the figure. The cross-sectional area, modulus of elasticity, and the coefficient of thermal expansion of the rod AB are 500 mm
, 60 × 10
MPa, and 12 × 10
per °C, respectively. The stiffness (k) of spring BC is 2500 N/mm.The internal force (in kN) that will develop in the spring BC when the temperature of rod AB is increased by 100 °C is __________ (rounded off to one decimal place).
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Open questionCENAT2 marksNeeds review
A simply-supported rectangular reinforced concrete beam has a width 250 mm and an overall depth 600 mm. The effective span of the beam is 6.23 m. The beam carries a live load of 5 kN/m and a super imposed dead load of 5 kN/m, in addition to its own weight. The unit weight of reinforced concrete is 25 kN/m³. Consider the load factor of 1.5 for all stated loads.
The design bending moment (in kN-m) for the limit state of collapse is ______ (rounded off to two decimal places).
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Open questionCENAT2 marksNeeds review
The cross-section of a steel T-beam is shown in the figure where all dimensions are in mm.
The plastic section modulus of the given cross-section is __________ × 10
mm
(in integer).Log in to check the answer
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Open questionCENAT2 marksNeeds review
Width (in m) of a rectangular channel required to carry a discharge of 96 m³/s at a critical depth of 9.8 m is ______ (rounded off to two decimal places).
Use acceleration due to gravity = 9.8 m/s²
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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 53
Open questionCENAT2 marksNeeds review
A fully-penetrating well of 20 cm diameter is provided in an unconfined aquifer. The height of the ground water table is 30 m from the bottom of the aquifer. After a long period of pumping at a rate of 3 m
/s, the drawdown in the observation wells at 10 m and 100 m from the pumped well is 12 m and 11 m, respectively. The transmissivity (in m
/s) of the aquifer is _____ (rounded off to one decimal place).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 53
Open questionCENAT2 marksNeeds review
The cross section of a 0.5 m wide vertical gate holding water and oil is shown in the figure. The unit weights of water and oil are 10 kN/m³ and 7.5 kN/m³, respectively.
The horizontal hydrostatic force (in kN) acting on the vertical gate is ______ (rounded off to two decimal places).
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Open questionCENAT2 marksNeeds review
A wide unlined channel carries sediment-free water. The depth of water is 1 m. The specific weight of water is 10 kN/m
. To prevent scouring, the maximum permissible tractive stress on bed is 10 N/m
. The maximum slope of the channel bed to prevent scouring is 1 in n. The value of n is _____ (in integer).Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 54
Open questionCENAT2 marksNeeds review
A centrifugal pump is delivering water from an underground tank to an overhead reservoir against a static head of 35 m through a 2 km long, 250 mm diameter pipe. The head-discharge characteristic of the pump is given by
where H is the head (in m) generated by the pump and Q is the discharge (in m³/s) of the pump.
Neglecting all minor losses, the head (in m) generated by the pump is ______ (rounded off to the nearest integer).
Use: Darcy-Weisbach friction factor f = 0.04
Acceleration due to gravity = 9.81 m/s²
π = 3.14Log in to check the answer
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Open questionCENAT2 marksNeeds review
A bridge with an expected life of 50 years is designed for a flood of 1000 m
/s corresponding to the return period of 100 years. The risk associated with this design is __________ (rounded off to two decimal places).Log in to check the answer
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Open questionCENAT2 marksNeeds review
The flow depth for a discharge of 10 m³/s in a wide rectangular channel is 2.0 m. Assume that the flow is uniform.
If the discharge is doubled, the flow depth (in m) in this channel is ______ (rounded off to two decimal places).
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