GATE MN year:2024 PYQs & Answers — Page 2

Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 2 of 7

Exposure to loud impulsive noise may lead to

Your answerChoose one option.

Nystagmus

Siderosis

Tinnitus

Stannosis

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In a self-contained closed-circuit breathing apparatus,

Your answerChoose one option.

the exhaled air is released outside the apparatus.

the exhaled air is wholly absorbed within the apparatus.

CO₂ is released outside the apparatus after separating from exhaled air.

CO₂ from exhaled air is absorbed with a chemical.

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A rectangular mine airway of 2.0 m width and 2.5 m height has a bend with deflection of

radian. If the radius of curvature of the bend is 4.0 m, the shock factor of the bend is (round off to three decimals)

Your answerChoose one option.

0.014

0.024

0.051

0.071

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In an underground coal mine, two fatalities and three serious bodily injuries occurred during the year 2022. The average daily employment is 1100 and annual working days is 300. The severity index as per DGMS guideline for the mine is

Your answerChoose one option.

12.32

25.58

31.21

34.63

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For a geared engine winding system, the man winding cage is placed at its normal position at pit top of the shaft. As per CM 2017, the minimum space, in m, between the center of the hole of the detaching hook attached to the rope shackle and detaching belt plate is

Your answerChoose one option.

3.6

2.4

1.8

1.5

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The value of integral,

Your answerChoose one option.

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The value of

Your answerChoose one option.

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The spherical semivariogram model

is represented by the following expression, where h is the lag distance.

The parameters

and

are respectively known as

Your answerChoose one option.

nugget, range and sill.

sill, nugget and range.

sill, range and nugget.

nugget, sill and range.

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In a M/M/1 system, the inter-arrival time of dumpers to a shovel follows exponential distribution with a mean arrival rate of 9 dumpers per hour. The service time of the shovel follows exponential distribution with a mean service rate of 12 dumpers per hour. The probability that exactly one dumper is available to the shovel is

Your answerChoose one option.

1/16

3/16

3/4

1/4

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A project network with the sequence of five activities is shown.

Diagram for Mining Engineering question 20

The crashing costs of activities are

Activity	A	B	C	D	E
Duration (week)	5	6	8	3	4
Crashing cost per week (lakh INR)	4.0	2.5	2.0	3.0	4.0

If the project is crashed by one week, the increase in project cost, in lakh INR, is

Your answerChoose one option.

2.0

2.5

3.0

4.0

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GATE MN year:2024 PYQs

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20