Mining Engineering Gate 2018 Questions with Answer

Ques 27 GATE 2018

The property that CANNOT be determined from uniaxial compressive strength test of a rock sample fitted with strain gauges is

Ques 28 GATE 2018

The radial stress concentration around a long circular tunnel excavated in rock is given by the curve

Ques 29 GATE 2018

Ward-Leonard system is provided in the winding system in order to restrict

Ques 30 GATE 2018

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

Ques 31 GATE 2018

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

A

B

C

D

Ques 32 GATE 2018

The significance of 'potentially explosive mixture' in Coward flammability diagram is -

Ques 33 GATE 2018

Considering 'I' as 'intake' and 'R' as 'return', the ventilation symbol for the shaft-bottom air-lock in a coal mine is

A

B

C

D

Ques 34 GATE 2018

From a coal seam of a mine 1000 tonnes of coal is produced per day. The seam has inflammable gas emission rate of 14000 m³ per day. Percentage of inflammable gas in general body of air is 0.14. The gassiness of the seam is

Ques 35 GATE 2018

The temperature profiles and the plume patterns that are most likely to result are given in the figures. The dotted line represents 'adiabatic lapse rate' and the bold line represents 'environmental lapse rate'. The WRONG combination is

A

B

C

D

Ques 36 GATE 2018

Two contours of RL 60 m and 70 m are separated by 34 m measured along dip of the seam. The dip of the seam in degree is ________.

Ques 37 GATE 2018

The RL of the initial station is 200 m. If ∑BS=1.54 m and ∑FS=0.45 m, then the RL of the last station in m is __________.

Ques 38 GATE 2018

For the conveyor belt drive shown, the tension on the tight side (T₁) is double that of the slack side. The coefficient of friction between belt and drum is 0.21. The minimum angle of lap (in degree) to avoid slippage of the belt is __________.

Ques 39 GATE 2018

In a bord and pillar development district, 6 headings driven along the strike direction are surrounded by panel barriers on the dip and rise sides. The maximum possible number of faces for the panel is ________.