Mining Engineering Gate 2017 Questions with Answer

Ques 27 GATE 2017

The operating conditions of a rotary rock drill are: applied thrust: 6.75 kN, revolution: 180 rpm, and penetration rate: 0.15 m/min. The work done per revolution in N-m is

Ques 28 GATE 2017

The Absolute amount of energy and density of a booster and ANFO are given below. The Relative bulk strength of booster is

Ques 29 GATE 2017

A deeply seated ore body dips at 70° having an average width of 60 m. The ore body, hanging wall, and footwall are competent. The suitable stoping method for this ore body is

Ques 30 GATE 2017

The results of the crossing point temperature experiments for coal A and B are shown in the figure.

Ques 31 GATE 2017

The "yellow boy" formed due to acid mine drainage mainly consists of

Ques 32 GATE 2017

A double ended ranging drum shearer is employed in a longwall mine of face length 150 m. The mining height is 3.5 m and depth of the web cut is 0.76 m. The cycle time for unidirectional cutting is 40 min. Considering bulk density of the coal to be 1.4 t/m³, hourly production from the face in tonne is ________.

Ques 33 GATE 2017

The strength of a stranded wire rope is proportional to

Ques 34 GATE 2017

A 20 m thick and 30 m wide confined aquifer has two monitoring wells spaced 500 m apart along the direction of groundwater flow. The difference in water level between the wells is 2 m. The hydraulic conductivity is 50 m/day. The rate of flow in m³/day is

Ques 35 GATE 2017

The following readings refer to a reciprocal leveling at staff stations A and B respectively:

Ques 36 GATE 2017

The areas within the contour lines of a proposed site for an overburden dump are as follows:

Ques 37 GATE 2017

Total ore mined from a sub-level open stope of a copper deposit is measured to be 100000 tonne. The ore recovery and ore dilution during stoping are 90% and 20% respectively. The in situ Cu grade of the ore in the stope is 0.65%. The selling price of copper is Rs. 400/kg of metal. Ignoring any other metal losses in the downstream process of the ore, the revenue generated by selling the ore in Crores of rupees is

Ques 38 GATE 2017

The block grade model of an ore deposit is shown in the figure below. The relationship between block value per tonne (B_v) in rupees and the block grade in percentage (x) is given below:

Ques 39 GATE 2017

A mine is being developed by bord and pillar method with a gallery size of 4.8 m×2.4 m. The mine operates in 3 shifts per day and 6 faces are blasted per shift. The average pull per round of blast is 1.2 m and the bulk density of coal is 1.4 t/m³. If the OMS is 2.5, then the average manpower deployed in the development section per shift is ____________.