GATE MN discipline:mining-engineering PYQs & Answers — Page 36

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Questions 351–360 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 36 of 65

Owning cost of a machine does NOT include

Your answerChoose one option.

purchase price.

insurance.

interest.

operating cost.

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Folds are the structural features resulting from

Your answerChoose one option.

ductile deformation of earth crust.

brittle deformation of earth crust.

high impact tectonic stresses of earth crust.

fracturing of earth crust.

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The CORRECT curve showing the relationship between vertical stress on a coal pillar and extraction ratio of a bord and pillar panel in a horizontal seam is

Diagram for Mining Engineering question 18

Your answerChoose one option.

Curve A.

Curve B.

Curve C.

Curve D.

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Given impeller diameter

, speed of rotation

and air density

, for geometrically similar fans, the fan pressure is proportional to

Your answerChoose one option.

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A coal sample having moisture content of 8.0% has unit weight 15.6 kN/m³. The dry unit weight of the sample, in kN/m³ is _____. [round off to 2 decimal places]

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The value of the integral

computed using Simpson’s 1/3 rule with 2 subintervals is ________. [round off to 3 decimal places]

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In the context of sound frequency analysis, the lower and upper frequencies of a 1/1 octave band are 710 Hz and 1420 Hz respectively. The corresponding centre frequency of the band in Hz, is______. [round off to the nearest integer]

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In Batte Environmental Evaluation System (BEES) of Environment Impact Assessment (EIA), “air pollution” has a Parameter Importance Unit (PIU) value of 52. The Environment Quality (EQ) score of a project with respect to air pollution was 0.8 before the project implementation and it becomes 0.6 after the project implementation. The difference in the “Environmental Impact Unit” (EIU), before and after the project implementation is ______. [round off to 2 decimal places]

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A system consists of four components connected functionally in a parallel configuration. The reliability of the individual components is 0.40, 0.60, 0.50 and 0.40. The system reliability, is________. [round off to 3 decimal places]

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A vehicle is moving at a speed of 12 m/s on a level road. It applies emergency brakes and starts to skid without rolling in a straight path. The deceleration of the vehicle is constant after braking and it comes to rest at a distance of 15 m. Assuming,

m/s², the coefficient of kinetic friction between the tyres and road is ________. [round off to 2 decimal places]

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GATE MN discipline:mining-engineering PYQs

Question 16

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Question 18

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Question 21

Question 22

Question 23

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Question 25