Mining Engineering - MN 2018 GATE Paper with solution

``` Page 1

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 1/3
Q. 1 – Q. 5 carry one mark each.
Q.1  “From where are they bringing their books? ________ bringing _______ books from
_____.”

The words that best fill the blanks in the above sentence are

(A) Their, they’re, there
(B) They’re, their, there
(C) There, their, they’re
(D) They’re, there, there

Q.2  “A _________ investigation can sometimes yield new facts, but typically organized ones
are more successful.”

The word that best fills the blank in the above sentence is

(A) meandering (B) timely (C) consistent (D) systematic

Q.3  The area of a square is ?? . What is the area of the circle which has the diagonal of the
square as its diameter?

(A) ???? (B) ?? ?? 2

(C)
1
4
?? ?? 2
(D)
1
2
????

Q.4  What would be the smallest natural number which when divided either by 20 or by 42 or
by 76 leaves a remainder of 7 in each case?

(A) 3047 (B) 6047 (C) 7987  (D) 63847

Q.5  What is the missing number in the following sequence?

2,  12,  60,  240,  720,  1440,  _____,  0

(A) 2880 (B) 1440 (C) 720 (D) 0

Page 2

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 1/3
Q. 1 – Q. 5 carry one mark each.
Q.1  “From where are they bringing their books? ________ bringing _______ books from
_____.”

The words that best fill the blanks in the above sentence are

(A) Their, they’re, there
(B) They’re, their, there
(C) There, their, they’re
(D) They’re, there, there

Q.2  “A _________ investigation can sometimes yield new facts, but typically organized ones
are more successful.”

The word that best fills the blank in the above sentence is

(A) meandering (B) timely (C) consistent (D) systematic

Q.3  The area of a square is ?? . What is the area of the circle which has the diagonal of the
square as its diameter?

(A) ???? (B) ?? ?? 2

(C)
1
4
?? ?? 2
(D)
1
2
????

Q.4  What would be the smallest natural number which when divided either by 20 or by 42 or
by 76 leaves a remainder of 7 in each case?

(A) 3047 (B) 6047 (C) 7987  (D) 63847

Q.5  What is the missing number in the following sequence?

2,  12,  60,  240,  720,  1440,  _____,  0

(A) 2880 (B) 1440 (C) 720 (D) 0

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 2/3
Q. 6 – Q. 10 carry two marks each.

Q.6  In appreciation of the social improvements completed in a town, a wealthy philanthropist
decided to gift Rs 750 to each male senior citizen in the town and Rs 1000 to each female
senior citizen. Altogether, there were 300 senior citizens eligible for this gift. However,
only 8/9
th
of the eligible men and 2/3
rd
of the eligible women claimed the gift. How much
money (in Rupees) did the philanthropist give away in total?

(A) 1,50,000 (B) 2,00,000
(C) 1,75,000 (D) 1,51,000

Q.7
If ?????? ? 0 and ?? -?? =
1
?? , ?? -?? =
1
?? , ?? -?? =
1
?? , what is the value of the product ?????? ?

(A) -1
(B)
1
??????
(C) 1 (D) ??????

Q.8  In a party, 60% of the invited guests are male and 40% are female. If 80% of the invited
guests attended the party and if all the invited female guests attended, what would be the
ratio of males to females among the attendees in the party?

(A) 2:3 (B) 1:1 (C) 3:2 (D) 2:1

Q.9  In the figure below, ??????? + ??????? is equal to ____________ .

(A) ??????? - ??????? (B) ??????? + ???????
(C) ??????? + ??????? (D) ??????? + ???????

A
B
D
E
C
F
Page 3

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 1/3
Q. 1 – Q. 5 carry one mark each.
Q.1  “From where are they bringing their books? ________ bringing _______ books from
_____.”

The words that best fill the blanks in the above sentence are

(A) Their, they’re, there
(B) They’re, their, there
(C) There, their, they’re
(D) They’re, there, there

Q.2  “A _________ investigation can sometimes yield new facts, but typically organized ones
are more successful.”

The word that best fills the blank in the above sentence is

(A) meandering (B) timely (C) consistent (D) systematic

Q.3  The area of a square is ?? . What is the area of the circle which has the diagonal of the
square as its diameter?

(A) ???? (B) ?? ?? 2

(C)
1
4
?? ?? 2
(D)
1
2
????

Q.4  What would be the smallest natural number which when divided either by 20 or by 42 or
by 76 leaves a remainder of 7 in each case?

(A) 3047 (B) 6047 (C) 7987  (D) 63847

Q.5  What is the missing number in the following sequence?

2,  12,  60,  240,  720,  1440,  _____,  0

(A) 2880 (B) 1440 (C) 720 (D) 0

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 2/3
Q. 6 – Q. 10 carry two marks each.

Q.6  In appreciation of the social improvements completed in a town, a wealthy philanthropist
decided to gift Rs 750 to each male senior citizen in the town and Rs 1000 to each female
senior citizen. Altogether, there were 300 senior citizens eligible for this gift. However,
only 8/9
th
of the eligible men and 2/3
rd
of the eligible women claimed the gift. How much
money (in Rupees) did the philanthropist give away in total?

(A) 1,50,000 (B) 2,00,000
(C) 1,75,000 (D) 1,51,000

Q.7
If ?????? ? 0 and ?? -?? =
1
?? , ?? -?? =
1
?? , ?? -?? =
1
?? , what is the value of the product ?????? ?

(A) -1
(B)
1
??????
(C) 1 (D) ??????

Q.8  In a party, 60% of the invited guests are male and 40% are female. If 80% of the invited
guests attended the party and if all the invited female guests attended, what would be the
ratio of males to females among the attendees in the party?

(A) 2:3 (B) 1:1 (C) 3:2 (D) 2:1

Q.9  In the figure below, ??????? + ??????? is equal to ____________ .

(A) ??????? - ??????? (B) ??????? + ???????
(C) ??????? + ??????? (D) ??????? + ???????

A
B
D
E
C
F
GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 3/3

Q.10  A six sided unbiased die with four green faces and two red faces is rolled seven times.
Which of the following combinations is the most likely outcome of the experiment?

(A) Three green faces and four red faces.
(B) Four green faces and three red faces.
(C) Five green faces and two red faces.
(D) Six green faces and one red face.

END OF THE QUESTION PAPER

Page 4

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 1/3
Q. 1 – Q. 5 carry one mark each.
Q.1  “From where are they bringing their books? ________ bringing _______ books from
_____.”

The words that best fill the blanks in the above sentence are

(A) Their, they’re, there
(B) They’re, their, there
(C) There, their, they’re
(D) They’re, there, there

Q.2  “A _________ investigation can sometimes yield new facts, but typically organized ones
are more successful.”

The word that best fills the blank in the above sentence is

(A) meandering (B) timely (C) consistent (D) systematic

Q.3  The area of a square is ?? . What is the area of the circle which has the diagonal of the
square as its diameter?

(A) ???? (B) ?? ?? 2

(C)
1
4
?? ?? 2
(D)
1
2
????

Q.4  What would be the smallest natural number which when divided either by 20 or by 42 or
by 76 leaves a remainder of 7 in each case?

(A) 3047 (B) 6047 (C) 7987  (D) 63847

Q.5  What is the missing number in the following sequence?

2,  12,  60,  240,  720,  1440,  _____,  0

(A) 2880 (B) 1440 (C) 720 (D) 0

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 2/3
Q. 6 – Q. 10 carry two marks each.

Q.6  In appreciation of the social improvements completed in a town, a wealthy philanthropist
decided to gift Rs 750 to each male senior citizen in the town and Rs 1000 to each female
senior citizen. Altogether, there were 300 senior citizens eligible for this gift. However,
only 8/9
th
of the eligible men and 2/3
rd
of the eligible women claimed the gift. How much
money (in Rupees) did the philanthropist give away in total?

(A) 1,50,000 (B) 2,00,000
(C) 1,75,000 (D) 1,51,000

Q.7
If ?????? ? 0 and ?? -?? =
1
?? , ?? -?? =
1
?? , ?? -?? =
1
?? , what is the value of the product ?????? ?

(A) -1
(B)
1
??????
(C) 1 (D) ??????

Q.8  In a party, 60% of the invited guests are male and 40% are female. If 80% of the invited
guests attended the party and if all the invited female guests attended, what would be the
ratio of males to females among the attendees in the party?

(A) 2:3 (B) 1:1 (C) 3:2 (D) 2:1

Q.9  In the figure below, ??????? + ??????? is equal to ____________ .

(A) ??????? - ??????? (B) ??????? + ???????
(C) ??????? + ??????? (D) ??????? + ???????

A
B
D
E
C
F
GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 3/3

Q.10  A six sided unbiased die with four green faces and two red faces is rolled seven times.
Which of the following combinations is the most likely outcome of the experiment?

(A) Three green faces and four red faces.
(B) Four green faces and three red faces.
(C) Five green faces and two red faces.
(D) Six green faces and one red face.

END OF THE QUESTION PAPER

GATE 2018   Mining Engineering
MN 1/11
Q. 1 – Q. 25 carry one mark each.
Q.1
If
cos sin
sin cos
X
??
??
??
?
??
?
??
, then
T
XX is
(A)
01
10
??
??
??
(B)
10
01
???
??
?
??
(C)
10
01
??
??
??
(D)
01
10
? ??
??
?
??

Q.2  The values of x satisfying the following condition are
43
0
36
x
x
?
?
?

(A) 6, 4 (B) 4, 9 (C) 5, 6 (D) 3,7

Q.3  An azimuth of 330° corresponds to a quadrant bearing of
(A) W60
o
N (B) N30
o
W (C) S30
o
W (D) S30
o
E

Q.4  Tri-cone drill bit is a type of
(A) cross bit (B) button bit
(C) rotary roller bit (D) button drag bit

Q.5  Exposure of weak roof in junctions of a development district in a coal mine can be
decreased by
(A) increasing dimension of panel barrier
(B) stitching side walls
(C) increasing support density at junctions
(D) staggering the junctions

Q.6  The property that CANNOT be determined from uniaxial compressive strength test of a
rock sample fitted with strain gauges is
(A) cohesion (B) Poisson’s ratio
(C) modulus of elasticity (D) dilation

Page 5

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 1/3
Q. 1 – Q. 5 carry one mark each.
Q.1  “From where are they bringing their books? ________ bringing _______ books from
_____.”

The words that best fill the blanks in the above sentence are

(A) Their, they’re, there
(B) They’re, their, there
(C) There, their, they’re
(D) They’re, there, there

Q.2  “A _________ investigation can sometimes yield new facts, but typically organized ones
are more successful.”

The word that best fills the blank in the above sentence is

(A) meandering (B) timely (C) consistent (D) systematic

Q.3  The area of a square is ?? . What is the area of the circle which has the diagonal of the
square as its diameter?

(A) ???? (B) ?? ?? 2

(C)
1
4
?? ?? 2
(D)
1
2
????

Q.4  What would be the smallest natural number which when divided either by 20 or by 42 or
by 76 leaves a remainder of 7 in each case?

(A) 3047 (B) 6047 (C) 7987  (D) 63847

Q.5  What is the missing number in the following sequence?

2,  12,  60,  240,  720,  1440,  _____,  0

(A) 2880 (B) 1440 (C) 720 (D) 0

GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 2/3
Q. 6 – Q. 10 carry two marks each.

Q.6  In appreciation of the social improvements completed in a town, a wealthy philanthropist
decided to gift Rs 750 to each male senior citizen in the town and Rs 1000 to each female
senior citizen. Altogether, there were 300 senior citizens eligible for this gift. However,
only 8/9
th
of the eligible men and 2/3
rd
of the eligible women claimed the gift. How much
money (in Rupees) did the philanthropist give away in total?

(A) 1,50,000 (B) 2,00,000
(C) 1,75,000 (D) 1,51,000

Q.7
If ?????? ? 0 and ?? -?? =
1
?? , ?? -?? =
1
?? , ?? -?? =
1
?? , what is the value of the product ?????? ?

(A) -1
(B)
1
??????
(C) 1 (D) ??????

Q.8  In a party, 60% of the invited guests are male and 40% are female. If 80% of the invited
guests attended the party and if all the invited female guests attended, what would be the
ratio of males to females among the attendees in the party?

(A) 2:3 (B) 1:1 (C) 3:2 (D) 2:1

Q.9  In the figure below, ??????? + ??????? is equal to ____________ .

(A) ??????? - ??????? (B) ??????? + ???????
(C) ??????? + ??????? (D) ??????? + ???????

A
B
D
E
C
F
GATE 2018                                                                                            General Aptitude (GA) Set-3
GA 3/3

Q.10  A six sided unbiased die with four green faces and two red faces is rolled seven times.
Which of the following combinations is the most likely outcome of the experiment?

(A) Three green faces and four red faces.
(B) Four green faces and three red faces.
(C) Five green faces and two red faces.
(D) Six green faces and one red face.

END OF THE QUESTION PAPER

GATE 2018   Mining Engineering
MN 1/11
Q. 1 – Q. 25 carry one mark each.
Q.1
If
cos sin
sin cos
X
??
??
??
?
??
?
??
, then
T
XX is
(A)
01
10
??
??
??
(B)
10
01
???
??
?
??
(C)
10
01
??
??
??
(D)
01
10
? ??
??
?
??

Q.2  The values of x satisfying the following condition are
43
0
36
x
x
?
?
?

(A) 6, 4 (B) 4, 9 (C) 5, 6 (D) 3,7

Q.3  An azimuth of 330° corresponds to a quadrant bearing of
(A) W60
o
N (B) N30
o
W (C) S30
o
W (D) S30
o
E

Q.4  Tri-cone drill bit is a type of
(A) cross bit (B) button bit
(C) rotary roller bit (D) button drag bit

Q.5  Exposure of weak roof in junctions of a development district in a coal mine can be
decreased by
(A) increasing dimension of panel barrier
(B) stitching side walls
(C) increasing support density at junctions
(D) staggering the junctions

Q.6  The property that CANNOT be determined from uniaxial compressive strength test of a
rock sample fitted with strain gauges is
(A) cohesion (B) Poisson’s ratio
(C) modulus of elasticity (D) dilation

GATE 2018   Mining Engineering
MN 2/11
Q.7  The radial stress concentration around a long circular tunnel excavated in rock is given by
the curve

(A) m (B) n (C)  o (D)  p

Q.8  Ward-Leonard system is provided in the winding system in order to restrict
(A) over-winding of the cage
(B) deceleration of the cage
(C) acceleration of the cage
(D) over-speeding of the cage

Q.9  The equipment NOT related to extraction of coal from longwall face operation is

Q.10  The correct figure depicting the extraction of contiguous seams in bord and pillar working
is indicated by

Q.11  The significance of ‘potentially explosive mixture’ in Coward flammability diagram is -
(A) leakage of fresh air may lead to explosive condition for the mixture
(B) leakage of firedamp may lead to explosive condition for the mixture
(C) increase in the ambient temperature may lead to explosive condition for the mixture
(D) introduction of a source of ignition may result in explosion of the mixture

/ ra
? ? m
? ? n
? ? p
? ? o
0
p
r - distance from the center
Stress concentration
0
p
a
- in-situ stress
0
p
8m
10m
(A) (B)
(C) (D)
8m
pillar
10m
parting
parting
pillar
```

FAQs on Mining Engineering - MN 2018 GATE Paper with solution

 1. What is the importance of mining engineering in today's world?
Ans. Mining engineering plays a crucial role in the extraction and processing of minerals, metals, and other valuable resources from the earth's crust. It ensures the efficient and safe extraction of these resources, contributing to various industries such as construction, energy, manufacturing, and more. Mining engineers are responsible for designing and implementing mining operations, managing the extraction processes, and minimizing environmental impacts.
 2. How can one pursue a career in mining engineering?
Ans. To pursue a career in mining engineering, one must first complete a Bachelor's degree in Mining Engineering or a related field. Many universities and institutions offer undergraduate programs in mining engineering. After completing the degree, individuals can gain practical experience through internships or entry-level jobs in the mining industry. Obtaining a professional license or certification is also beneficial for career advancement in this field.
 3. What are the key skills required for a mining engineer?
Ans. Mining engineers require a combination of technical, analytical, and practical skills. Some key skills include: 1. Knowledge of mining techniques and equipment: Understanding various extraction methods, mining machinery, and technologies used in the industry. 2. Geology and geotechnical skills: Ability to assess geological conditions, analyze rock formations, and determine the stability of mining sites. 3. Environmental management: Knowledge of sustainable mining practices, waste management, and environmental regulations. 4. Safety and risk management: Ensuring the safety of workers and implementing measures to minimize workplace hazards. 5. Problem-solving and decision-making: Ability to identify and solve complex problems related to mining operations, resource management, and logistical challenges.
 4. What are the career prospects for mining engineers?
Ans. Mining engineers have various career opportunities in both the public and private sectors. They can work in mining companies, consulting firms, government agencies, research organizations, and educational institutions. Some common job roles include mine planner, production engineer, environmental manager, safety officer, project manager, and research scientist. With experience and expertise, mining engineers can also pursue leadership positions or become consultants in the industry.
 5. How is the mining industry addressing environmental concerns?
Ans. The mining industry is increasingly focusing on sustainable practices to address environmental concerns. Some initiatives include: 1. Adoption of cleaner technologies: Implementing advanced mining technologies that reduce energy consumption, emissions, and waste generation. 2. Environmental impact assessments: Conducting comprehensive assessments to evaluate the potential environmental impacts of mining operations and developing mitigation strategies. 3. Land reclamation and rehabilitation: Rehabilitating mined areas by restoring natural habitats, planting vegetation, and ensuring the long-term stability of the land. 4. Water management: Implementing efficient water management strategies to minimize water usage, prevent contamination, and restore water bodies. 5. Community engagement and consultation: Engaging with local communities, indigenous groups, and stakeholders to address their concerns, promote transparency, and ensure sustainable mining practices.
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