GATE MN 2018 Paper 1 — page 8

Complete GATE MN 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 22–24 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 8 of 22

Considering ‘I’ as ‘intake’ and ‘R’ as ‘return’, the ventilation symbol for the shaft-bottom air-lock in a coal mine is

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Diagram for Mining Engineering question 12

Diagram for Mining Engineering question 12 (figure 2)

Diagram for Mining Engineering question 12 (figure 3)

Diagram for Mining Engineering question 12 (figure 4)

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From a coal seam of a mine 100 tonnes of coal is produced per day. The seam has inflammable gas emission rate of 1400 m

per day. Percentage of inflammable gas in general body of air is 0.14. The gassiness of the seam is

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Degree IV

Degree III

Degree II

Degree I

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The temperature profiles and the plume patterns that are most likely to result are given in the figures. The dotted line represents ‘adiabatic lapse rate’ and the bold line represents ‘environmental lapse rate’. The WRONG combination is

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Diagram for Mining Engineering question 14

Diagram for Mining Engineering question 14 (figure 2)

Diagram for Mining Engineering question 14 (figure 3)

Diagram for Mining Engineering question 14 (figure 4)

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2018 · Paper 1

Question 12

Question 13

Question 14