GATE MN 2018 Paper 1 — page 7

Questions 19–21 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 7 of 22

The equipment NOT related to extraction of coal from longwall face operation is

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AFC

road header

powered support

DERD shearer

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The correct figure depicting the extraction of contiguous seams in bord and pillar working is indicated by

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The significance of ‘potentially explosive mixture’ in Coward flammability diagram is -

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leakage of fresh air may lead to explosive condition for the mixture

leakage of firedamp may lead to explosive condition for the mixture

increase in the ambient temperature may lead to explosive condition for the mixture

introduction of a source of ignition may result in explosion of the mixture

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2018 · Paper 1