Mining Engineering
GATE MN year:2023 PYQs
Build your understanding with focused practice from past exam papers.
Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.
Question 11
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The fault pattern shown in the figure is a case of _____
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The blast pattern of a coal face shown in the figure represents____
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A shear stress
acts tangentially to the upper surface of a block and causes a small deformation
as shown. The shear strain is calculated by 
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Given two vectors
and
, the magnitude of projection of
along
isYour answerChoose one option.
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Axial stress versus axial strain curves for two test results of a porous rock from triaxial undrained compression tests are shown in the figure. The pore water pressure for the curve B can be the best explained by
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Given two random variables X and Y, the expected value E(3X−5Y) is
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The reaction products of calcium hydroxide with acidic feruginous mine water are
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An underground coal mine experienced 5 serious injuries, 15 reportable injuries, and 25 minor injuries during 2020. If the average employment in the mine is 1200, then the total injury rate per 1000 persons employed is
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A linear programming problem is given as:
Maximize
Subject to:
The problem hasYour answerChoose one option.
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A tabular, near-flat (dip < 30°), and less than 2 m thick copper orebody having erratically located grade is to be mined underground. Wall rock and orebody are competent. The most suitable mining method is
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