GATE MN 2023 Paper 1 — page 15

Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.

A duct of diameter 0.60 m with an exhausting fan has −97.5 mm wg static pressure behind the fan when the air flow rate is 4.0 m³/s. If an evase with inlet to outlet area ratio of 1:4 and efficiency 60% is attached to the outlet of the fan, the static pressure of the fan in mm of wg becomes

Your answerChoose one option.

−104.26

−99.13

−90.73

−80.6

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Coordinate of two points A and B are (E 0 m, N 200 m) and (E 300 m, N 200 m), respectively. The bearing of two lines AO and BO are 67° and 35°, respectively. The easting of the point O, in m, is _____.

[rounded off to 2 decimal places]

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Data related to a surface miner operation are given below - Drum width (m) = 3.0 Average cutting depth (cm) = 20 Average cutting speed (m/min) = 25 Length of pit (m) = 500 Turning time (min) = 2 Truck exchange time (s) = 30 Truck capacity (m³) = 15

Considering in situ volume, the production rate of the surface miner in m³/hr, is _____.

[rounded off to 1 decimal place]

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2023 · Paper 1

Question 43

Question 44

Question 45