GATE CE 2024 Paper 2 — page 20

Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.

A 2 m × 1.5 m tank of 6 m height is provided with a 100 mm diameter orifice at the center of its base. The orifice is plugged and the tank is filled up to 5 m height. Consider the average value of discharge coefficient as 0.6 and acceleration due to gravity (

) as 10 m/s

. After unplugging the orifice, the time (in seconds) taken for the water level to drop from 5 m to 3.5 m under free discharge condition is __________ (rounded off to 2 decimal places).

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A rectangular channel is 4.0 m wide and carries a discharge of 2.0 m

/s with a depth of 0.4 m. The channel transitions to a maximum width contraction at a downstream location, without influencing the upstream flow conditions. The width (in meters) at the maximum contraction is ______________ (rounded off to 2 decimal places).

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A circular settling tank is to be designed for primary treatment of sewage at a flow rate of 10 million liters/day. Assume a detention period of 2.0 hours and surface loading rate of 4000 liters/m

/day. The height (in meters) of the water column in the tank is ______________ (rounded off to 2 decimal places).

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2024 · Paper 2

Question 58

Question 59

Question 60