GATE MN year:2021 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

The hydraulic sand stowing pipeline layout should be such that

Your answerChoose one option.

the geometric profile must coincide with the hydraulic gradient line.

the hydraulic profile should always be below the hydraulic gradient line.

the hydraulic profile should always be above the hydraulic gradient line.

the geometric profile should always be above the hydraulic gradient line.

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For a “positive definite” square matrix, the TRUE statement is

Your answerChoose one option.

the matrix is singular.

all the eigen values of the matrix are greater than zero.

all the eigen values of the matrix are zero.

some of the eigen values can be less than zero.

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The standard normal distribution is a

Your answerChoose one option.

non-parametric distribution.

single parameter distribution.

two-parameter distribution.

three-parameter distribution.

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Variance of the sum of two statistically independent random variables

and

, is

Your answerChoose one option.

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The difference between depreciation and amortization allowances in tax calculation is that

Your answerChoose one option.

depreciation is for a tangible asset applicable on its declared life; whereas amortization is for an intangible asset applicable on a specified period.

depreciation is for an intangible asset applicable on its declared life; whereas amortization is for a tangible asset applicable on a specified period.

depreciation is for a tangible asset applicable on a specified period; whereas amortization is for an intangible asset applicable on its declared life.

depreciation is for an intangible asset applicable on a specified period; whereas amortization is for a tangible asset applicable on its declared life.

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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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GATE MN year:2021 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20