Mining Engineering Gate Yearwise 


Mining Engineering Gate 2018 Questions with Answer

Ques 40 GATE 2018

A roadway in a mine, a single light source as shown, emits light uniformly in all directions. The floor level illumination at station A is 20 lux. The floor level illumination at a point B in lux is ____________.


(8.5) is the correct answer.

Ques 41 GATE 2018

A system of two identical components connected in series has reliability of 0.25. The reliability of each component is ___________.


(0.5) is the correct answer.

Ques 42 GATE 2018

The operational status of an HEMM in a shift is shown in the diagram. The availability of the machine in % is __________.


(56.0) is the correct answer.

Ques 43 GATE 2018

Match the following blasting elements with the corresponding initiators.

A

P-2, Q-3, R-4, S-1

B

P-3, Q-1, R-4, S-2

C

P-3, Q-1, R-2, S-4

D

P-1, Q-4, R-2, S-3


(b) is the correct answer.

Ques 44 GATE 2018

The following plot is developed for a rock type after a series of triaxial tests. The uniaxial compressive strength and tensile strength of the rock type, respectively, in MPa, are

A

30, 5

B

30, 6

C

24, 6

D

24,5


(a) is the correct answer.

Ques 45 GATE 2018

Match the following in the context of environmental management.

A

P-1, Q-4, R-3, S-2

B

P-3, Q-1, R-4, S-2

C

P-4, Q-3, R-1, S-2

D

P-3, Q-4, R-1, S-2


(d) is the correct answer.

Ques 46 GATE 2018

A panel in coal mine produces 400 tonne per day. The number of persons employed in each of the three shifts is 110, 130 and 120. As per CMR, the minimum quantity of air that needs to be circulated at the last ventilation connection of the panel in m3/min is

A

780

B

900

C

1000

D

2400


(c) is the correct answer.

Ques 47 GATE 2018

A right conical iron ore stack on level ground of height 10 m has 60% Fe. The height of the conical stack is extended up to 20 m using iron ore of 50% Fe. The angle of repose of iron ore is 38°. The mean grade of the final stack in % Fe is __________.


(51.0) is the correct answer.

Ques 48 GATE 2018

Cash flow of a project of duration 4 years is shown. The uniform income 'R', in Rs. crores, at the end of 2nd 3rd and 4th years for an internal rate of return of 10% is ___________.


(4.4) is the correct answer.

Ques 49 GATE 2018

The grade values of alumina at three sample locations (A, B and C) in a bauxite deposit are as shown. Using the 'inverse distance' method, the computed grade in % alumina at location 'Z' is ________.


(36.0) is the correct answer.

Ques 50 GATE 2018

Economic feasibility of two methods is examined for meeting a targeted mine production. On a yearly basis, the following cost parameters (Rs in crores) are applicable for these methods.

The annual rate of production, 'X' in million tonnes for which both the methods will yield the same operating cost is _________.


(5.0) is the correct answer.

Ques 51 GATE 2018

A person standing 50 m away from an HEMM experiences 90 dB sound pressure level. If the person moves to a new location that is 70 m away from the HEMM, the sound pressure level experienced by the person, in dB, becomes ________.


(86.75) is the correct answer.

Ques 52 GATE 2018

A portion of a ventilation system has two splits as shown. Split 'A' has a resistance of 0.2 Ns2/m8 and a regulator of size 2.0 m2. The resistance of split 'B' in Ns2/m8 is _________.


(0.24) is the correct answer.

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