GATE Mining Engineerinnewg 2010

7/21/2019 GATE Mining Engineerinnewg 2010

1/16


2/16

2010

'

Q l

Q.25 carry one mark eaeb.

Q.l Ascensionally ventilated coeJ.

mine

inclines ideally should have

higher

methane layering nUJDbe '

when

compared to

descensiona.lly ventilated inclines. The reason

is

A) in IISCelt iionally ventilated incline density of air is higher

B)

ascennionaJ[y ventilated

incline creates

C


3/16

21110

MN

Q.7 At a surface mine office the independent Sound Pressure Levels (SPL) measured

in

dB(A)

on

accowrt

of

3 drill machines are 85, 88 and 85. If all the three machines work simultaneously, the

combined SPL, in dB(A), is

(A)91 (B)90

(C) 92

D)

94

Q.8

The

backsigbt

reading on

a beo< h IIINk of RL 100.0 m is 1.45 m. If the inverse staff reading on a

foresight

is

2.23

m,

the

RL

of

the

staffswion

in m

is

A) 105.13 (B) 103.68 C) 100.78 D) 98.55

Q.9 For a mine of production

t

per year, the total

111

of production is given by at +b. The revenue

from

ale

is given byc/ .

If a, b and c,

are

C(IIIBtants,

the breakeven value of I is

Q.IO

Q.l1

Q.l2

(A) [ d ~ { c - 4 a b } ] / ( 2 a )

(C) d ~ { c 4ab}]/(2a)

Thevalueofthe

I

x ,,, is

~

_ l

.

(A).,.

(C)O

(B)

( ~ { c

4ab)]/ 2a)

D) [cJfc +4ab))1(2a)

B) I

(D) 112

Two de enninants

of order

n are multiplied. The order

of

he resultant detenninanl is

A) n B) 2n (C) i D) n/2

The

pallial ditfcrartial o:qUBlion,

r

iJD =constant, is a solution for

.

a e

ao

B)-+-=0

.

a o 1ao

D)-+--=0

iJr r

iJr

Q. \3 In Mohr-Coulomb failllfC criterion, the ratio of the uniaxial compressive strenst.h

to

tbe tensile

strength

is

l+sinfl

{A) I

s in ;

(C) C(l+sin;J

I sin)

-s in;

(B)

l s in ;

(D) 2C{l +sin)

I

sin)

Q.l4 The avt:Illge Young s modulus and Poisson's ratio values ofa limestone sample are 60 x 10 MPa

and

0.3

r e s p e d i ~ l y The shear

modulus in MPa is

A) 23.07

(B)230.7

{C)

2307.0

Q.IS The llllgie of draw in a trough subsidence helps in determining the

(A)

maximum subsidence

(B) ex\l:nt

of

surface subsidence

(C) plane of fracture

(D) critical width of the opening

D)

23070.0

J/16

www.examrace.com


4/16

2010 MN

Q.l6

Recapping

a winding rope

is

done to

(A) increBsc: the flex.Wlll strength

of

the rope

{B) increase

the

flexibihtycithe

rope

C) remove a portion

of

the rope subjected to deterior tion

D)

prevent the rope from excessive

rusting

Q.l7

Mat.;h

the following for

standard

diamond

drill

rods.

Specification

P.AW

Q.BW

>L


5/16

Q.23 Match

lhe

following

'

3

4

-

bney'slevcl

P e u i g r ~ ~ p h

Planimeter

Box

Sextant

{A)

\-a;

2-c; 3-d; 4-b

(C) l-d; 2-a; 3-d; 4-c

b

'

Purpose

I Measun:ment

horimntal and vertical angles

area of plotted figure

enlargement and reductioo

of

plotted maps

angle of nclination

(B)

1-c; 2-b;

3-d;

4-a

(D) I

-d;

2-c; 3-b;


6/16

:WJO

M

N

Q .2

8 A b

a lanced

win&

:r rai

ses 3000 to

ones pe

rda

y

fro

m

a dept

h

ofSO

O l tL Th

e pay

load o

ft be w in

ding

cage

is 7 ton

ncs. Th

e ener

gy oonsum

ed per

day in

k

Wh

at

70

wi

nder eff

icieocy is

A

) 6 030

B

) 5840

(C )

575

0

{

D 56

30

Q . 2 9

A tru

ss is loa

ded as s

hown in

t

he fig

ure. T he

fi:J

fce in the

m em b

er AC

is

A) tens

ion 7

5 9

N

C

)

te n

sion 43

.3 N

(B) comp

ression

43.3

N

0)

com

pression

75 9

N

Q . 3 0

ln

the

frictionless pu lley system

show n

in

the

figure,

each

pul ley

weighs

20

N.

The

w eig h

t

W

, in

N, that c

n be lifte

dby the

sys tem

unde

r

the

condit

i0115

shown

is

A)

200

(B

) 170

(

C )

ISO

D) 100

. .

Q.3

1 A

force

of S i

-S

OjN

is

m

oved from

t

he

orig

in to a co

on1ina

te(4.0m

,2.0m)

.

Thew

or1r.

dooe

in

the

process

i

n

J

is

A

) 7

5.6

(C

)90.2

(B) 85

.5

D)

1

00.0

Q . 3 2

T

he

qu

eue o

f trucks

a

t

a cru

sher pla

n t hopp

er is

known

to be M IM

I que

ue .

The probab

ili ty

that

there is

no truc

kto

unl

oad is 0

.3.

Due

to rains

the m

ean

sesvice

time

at

th e

h o p p e

r is

increa

sed by 30%

. A s

a consequ

ence,

th

e

expec t

ed n u m b

er uftru

clcs in the

queu

ing sys

tem ( in

cluding

th

e one

poss ib

lymloa

d ing)

becom

es

~ 0 0

.02

~

~

1

Q .33

Pull

from a n

unde

rground

IIII

IDel blas

ting is

normal l

ydistr i

buted

with

a Ill

ll8ll o

f 100 1o1m es

n

d

varia

nce 1

00 (ton

nes) . The

probab i

li ty

thatthe tonna

ge

value f

iom a b

lastexceed

s 110

is

-

~

=

.34 T

he fe

asibility

n-:gion

of an L

Pprob l

em in va

riables

andy

is give n

by

the followin

g


7/16

l

O IO

MN

Q JS

The

unit eost

matrix

o

fa ba

lanced t

ranspor

ta t ion p

roblem

is

sbo

wn

below

Q.36

Q

.37

; o o ~

: o o =

] ~ D ~

~ i D 2 ~

~ D ~ 3 ~ S

u p p l y

o ~

~

:

I

Demand

s

120 30

T

he

transpO

rtalion

COSl

of he in i t i

a l

basic

fe

uiblc

solution

obt

ained b

y the Nort

bWest co

mer

ru

le

A)

1025

B

)

1075

(C) l

iJO

D) 122

6

A

h

igb

volume

a ir

is

operate

d for 8 hours

in

a

m

ine

with the

flow

n. e of a

irvaryi

ng from

1.5

m

1

/m in

t

o

1.3

m

1

Jmjn.

h e

~

wei

ght of the f

ilter p

aper

is

2

.30

g

th e

final

weight

is

2.65

g.

Tbc

m ea

nco n c .

enuat io

n

o

f he

Suspen

ded

Par

ticulate

Matte

r

SPM)

during the

stud

y

per

iod

in

)

J.r/m' i

s

A)

59\

B)

5SO

(C)

545

0)

521

In

an

open

cas t

mine shown

in

the fi

gure be

low

th

e coa

l h as

aden

sity of 1

.4 tonn

e /m

1

. A

ssumin

g

m

ining

opera

tion sta

ned tom

plane

XY, the

opera

ting stri

pping ra

tiounder the

g

iven con

ditions

in

m'ltonn

e

is

X

20m

\

Om

20m

y

A)

2.32

B) 2.4

7

C) 2

.56

D)

2

64

Q

.38

A

develop

ed pane

l

fo

r a

coal se

am

hav

ing

inc

ubation

period of

6 m

onths h s

32

p

illars

u

nder ex

traction

having

size 25m,

and

height

3

.0 m Densi

ty

of co a

l

is

1.4

t

onnefm

. Ext

raction

n.lio

during

dcpilla

ring is expect

ed to

be

7

S%.

T

o depill

ar

the

p

anel wi

thin the

incuba

tion per

iod,

BSI1Iming

25

working

days

in

a m o nth,

the

produ ction

ftom the

panel

in

to n n e /

day

is

{A )420

{8

)480

(C)

5

6

{D) 68

Q.39

Aclose

d travc

neABC

DE of p

e r ime te

r425 m

ha

s a

total err

or +0.2

Sm

i

n Jat

i Ude

-o.4

4m in

de

parture

. The p r

ecisio n

of

ra

verse

is

(A

) I

in

~

(B) I in

7 8 5

{C

) 1 in

833

(D) 1

in

1 02

4

71 6

www.examrace.com


8/16

20 10

Q .4 0

Th

e va

lu e

ofh

e given

integ

ral is

J

sin

x

cb

_.

sinx

+cos

.r)

,

A)

s i n ~ r

1

0


9/16

1010

MN

Q

.46 Th

e stro

ke leng

th and

pitch o

f

the

ril

le bar of a

pen:uss

ive

drill

I lliCir.in

e

are

60

nm nd

tn60

re

spective

ly. If

tbc drill o

p:rateS

2000

blow s/

minule,

the rotll i

ona l

speedin I

Jllllof

he drill

stee

l

(A ) 145

(B

)158

(C) 16

2

(D l

m

Q.47

The

m

in

fa a operating

point

of

a

vemila

tioo I) 'Si

ml is

show

n

i

n th e figur

e be

low f

NP

V

of

200

PaaM

ists t

he

v

cntillli

oa sy

stem, the

resulta

nt pressu

re (Pa)

and

quaatil}

'

m)

g

enerate

d

by

tb c

fao respe

ctively are

P

l BI'II'l

I,Pa

100

0

600-

4 1>

2 0 Q

~

40

'

ua nti t

y. m

s

100

(A ) 500,6 8

(B) 600,63

(C)

640

55

omm

oa D

ata ue

sdoa

e o

.

Da

ta f r llnt

loas

4

u

d 9:

(D) 4

0o,63

T

he gnoul

ar medi

a

i

a fi D

ore bi

n

is

awuned

to

be ofreg

ulm spbe

ri


10/16

Cee

ranDl

llll

fo

r Q

n ~

5 u

Sl:

Matc

h

th

e e

lement

s

o

fa si

mplecu

rve as g

iven

in

the f

igull b

elow.

Q.SO

T h

e

tange

nt

len

gth in m

is

A

) 215.5

8

)2 20.4

{C)

22

8.4

Q

5I Th

e

lengtb

o

flbe longcb

ord

in m

is

(A) 3

75

8)

400.0

C

)

41

5

U

aked A

nswer

Quesd

ooa

Sl

atem ea

t fer IJakn

l

A

Mwer

Q

uestio

u

52

s.cl

53:

'

D)

23Q.9

D)

450

A lon

gwall panel

with

a

fa

ce be

igbt

o

f

3 .0

m

m

d &ce

le

ngth of SO.O

m is WOfte

d in

3 sbift

s

per

da

y

em

ploying

40

mea

p

er

shift. T

he

dept

h o

f

the w

eb of

the sbe

an:r

cutting

co

al is

0

5 m. T he

l.Ul

.it w eig h

t of

the

coal is

I .4 tonne

lm . Two

fullface cu

ts

r e

~ per

shill

Q.S2

The

d

ai ly pro

duct ion

from

th epanel

in 1

011ne11 is

A

) 945

B) 1240

C) 18 9

0

{D)

2530

Q.53

Tbc

paoelO

MSint

onncsi

s

A)

12.75

B

) 15.75

C)

8.

75

0) 5

.2 5

Air at

a dens

ity of

12

kglm

1

flows

in a stra

ight du

ct

s

udt

that

th

e

veloci

ty Bl lhc

entre

is

12

..5

mls. he

met

hod fac

tor for the

veloc

ity

p

rufilo.:

isknow

n

to

b e

0.80

.

Q.S

4

The

velocit

y press

un: valu

e

in

th e

duc

t

in Pa

is

A)31

8)47

C)6

0

0) 83

Q.SS he a

ir

f low

c o u J ~ e

a S

)n metriC

expan

sion su

ch

th

at lbc ao

a-sect

io oal

ar

ea of

the

duct

bc:come

s

double.

T

hestati

c

pr

e5IIIIR:

valu

e at lbe i

nlet and

ou

tlet of the

expans

ion are

6 Pa

and

90 Pa

. r espec

tively. N

eglecti

ng

frictio

n.

the s

h o

k ~

ioSII on

accoun

t of ex p

ansion

in P

ais

(A) IS

8

)22

C)

38

0

)46

10/1

6

www.examrace.com


11/16

Geoen

l

A

pdtud

e (GA)

Qa

eltioo

s

Q.56 -

Q.60car

ry

OH m

ark

N

eb.

Q .56

W

hich

of

he

foiW

witrg

option

sis the c

/osQt in111111

ilfg

to the

wordbf low

:

A)

urge

(B ) co

ndemn

(C

)

r

estrain

(D) scol

d

.

Q

.S7

The q

u tion

beluw

e o ~ ~ S

of a pair

o

n

laJed

. . .wd

r

ol lowed

b

y ourpain

o

fwo

mb Selec

t

th

e

pair

t

hai ba

t

uj

.esus

th e reL:

uion In

th e

origina

l pair

Pr

ealllbll

i:

A) a

rpendq

ynr: law

B) pro

lop:play

(C )

epis

ode:

se

rial

(D) plo t;

story

Q.S8 Ch

cxne

the mtMI ap

propriat

e

word

from

t

he opto m

gfven

below

to CO

I1lpiete

the foll

owing

se

Ntence:

Tb

e coml

lllttee wnne

a

report. eD

ollla& o

nly t1te l

t reqlb

t of tbe

) f O ~

(A) r

nsonab

le

(B

) u p p o r

C

)

biuc

od

(D) iia gm

enled

Q 59

Ch

oose

tile mo

st

o

ppmpri

iJI

>WNd

from the

o

ptions

gt

ven

beluw

t

o

co

mplete

th e

fo

l lowing

se

ntence:

I f

u.e

.tr

y

u.

1o

Kh

leve

re111

. p n 1 t

1e

tb a

t 111e frul

u or p

rogrea

rudro

aU. a

nd

I

n ~ ~ u l

m

eai Te.

{A

) inevit

able

(

B ) conti

ngent

(C)

ob

li vious

{D )

impc

ntive

Q

.6 0 A

pc :

rsa:1 illve

sla Rs.IO

OO

a

t10

aDD

ual com

pound intere

st

for 2

years. At

tbee

od of

w

~

tho:

w bo

le

uoounl

i

i

n ..ested

at an

8

DIIl.lll.

&i

mple

in

terest

of

12%

fiH

S

yea

n.

Th

e

I< J

tal value

oftbe

m

-

iDaUy is:

(A

) 1776

(B )

1760

(C) 19

20

(D) 1

936

Q

.61 -

Q.65

c

arry tw

omark

s

eae

h.

Q.61

Theb

u onD

Gki-. ;

ID des l

pated

publle

p

J

C

IID sav

e a bra

e au

mber

of peop

le

f

rom

tile

weB

lulo

wn effecb

ef

e r i r o

~ ~ e n t

. . . . ._

tiiM ik

e.

.._ l

ve

tmekiD

& .eriol

llly lm

paln

ra

pinlto

ry

b

nldL.

T ile bJm

.

rl

gtatly

eb

to

pnll

eet

l lOIH

JIIOke

n

fr

oali

t l weffe

da.

W hic

h ofil

fo luw

ing stato:s

f JJLJ b

e / s

um.r

up

tile m

ea ll ing

ci

fhe

above p

assage

(A) E

ffects o

fmviiOW

IIimtll

l

tobacl:o

an:

w

clllmow

n..

{B)

The biD oo

sm okin

g iD

publ ic p laces

prote

ctB the

non smo1:e

n..

q

Passi v

e smnkin

8 is b d

for bc

alth.

D) The

baa on

~ ~ : ~ ~

k i n g iD pub

lic

p

laces

exclu

des pass

ive smokin

g.

11

116

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12/16

2

010

MN

Q

.62

Giv

en th

e se

quenc

e A,

B, B

,

C

,

C

.

C , D

, D,

D, D

,

etc., tha

tis

one

A two

B

s, three

Cs

, four

Dr

,

five Es

an

d so on

the

240

"'1et

te rin

th e9

CqUC

IICew

ill be:

{A)V

B

)

u

{C)

T

D )

W

Q

.63 Co

nside

r

th eset o

f

integ

ers {

1,

2

,

3, ...

SOOO

}. Tlte

num

ber

of

in

tege

rs

t

hat

is d

ivisi

ble b

y ne

ither

3 nor

4 is:

A) 166

8

(B

) 20

84

C ) 2

500

(D) 2

916

Q.6

4 A

po siti

ve intege

r m

in ba

se 1

0whe

n

LtpL ;;

nce.t

in

base

2 has

the

~

o

p

an

d iD

b

ase 3

has

th

e

Lt

pi

rnlat

i011 q.

W e gc

tp-

q

af9

0 wbcR

tb e

subtr

actio

n

is doQ

e

iD

bas

e 10.

W

bich

of

b

e

follo

wing

is

ne

cessa

rilytru

e:

A)

m 1

4

B)9

:Sm

:513

C)

6 :Sm

:58

0)m


13/16

. .

Sp

ace

for

o

ugh

ork

l l 16

www.examrace.com


14/16

p

ac

e f

or

ou

gb

o

rk

1 11

16

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15/16

2010

.

Space for ough ork

M N ~

1 - 16

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16/16

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Documents

GATE Mining Engineerinnewg 2010