Mining Engineering Gate Yearwise 


Mining Engineering Gate 2024 Questions with Answer

Ques 40 GATE 2024

In an opencast coal mine, blast vibrations are measured at two locations, A and B simultaneously for a maximum charge per delay (Q) of 1200 kg as given.

Assume the relation A Table:
where, K and β are site constants. The PPV in mm/s, at a distance of 200 m from the blast face, is ________.(round off up to 2 decimals)


(6.16) is the correct answer.

Ques 41 GATE 2024

A 35.0 kW motor transmits power to a pulley of 600 mm diameter, which rotates at 400 rpm to drive a flat belt. The tension in the tight side is 2.5 times of the slack side. Neglect all transmission losses. If the maximum allowable tension is 8.0 N per mm of belt width, then the minimum width of the belt in mm, is ________.(round off to 2 decimals)


(71.62) is the correct answer.

Ques 42 GATE 2024

A 1.2 m diameter drum winding system is shown. One of the winding ropes will be replaced for the manwinding cage

Consider the following:
1) A new rope is recapped once at least in every 6 months and a length of 2 m including existing capping is to be cut off from the rope before recapping.
2) The maximum life of a rope is 3.5 years and at least 2 rounds of rope should remain on the drum while the descending cage lands at the bottomost landing point.
3) No overwinding will take place during the maximum life of the new rope. Neglecting the impact of fleet angle on the length of the rope, the minimum length, in m, of new winding rope is _______.(round off up to 2 decimals)


(250.00) is the correct answer.

Ques 43 GATE 2024

For a continuous miner (CM) panel, the following data are given. Data related to CM A Table:

Assume, unit weight of coal is 1.4 tonne/m3 and its swell factor is 1.2. Consider, 6 working hours per shift.
The non-working time in min, in working hours per shuttle car to dispatch all coal cut by the CM, is __________.(round off up to 2 decimals)


(14.76) is the correct answer.

Ques 44 GATE 2024

In a development coal face, 12 holes are drilled and charged with explosive. Holes are initiated with electric delay detonators connected in series. The length of a detonator lead wire is 1.5 m. The length of the blasting cable is 120 m.
Data are as given:

The total resistance of the circuit in Ω, is __________. (round off up to 2 decimals)


(20.40) is the correct answer.

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