Mining Engineering
2017 · Paper 1
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Complete GATE MN 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 28–30 of 65. Imported answers require review unless explicitly marked reviewed.
Question 28
Open questionMNNAT2 marksNeeds review
The area of cross-section (x) of four rock samples and the respective applied loads (y) at failure under uniaxial loading are given below:
| x (cm²) | 7 | 10 | 13 | 16 |
| y (kN) | 35 | 45 | 60 | 80 |
If the best fit line
represents the above data, the coefficient of determination (
) of the best fit line isLog in to check the answer
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Open questionMNNAT2 marksNeeds review
The following readings refer to a reciprocal leveling at staff stations A and B respectively:
| Instrument station | Staff reading A (m) | Staff reading B (m) | Remarks |
| P | 1.725 | 2.835 | RL of A = 125.0 m |
| Q | 0.835 | 1.545 | |
The reduced level (RL) of staff station B in m is
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Open questionMNNAT2 marksNeeds review
The areas within the contour lines of a proposed site for an overburden dump are as follows:
| Contour RL (m) | Area (m²) |
| 195 | 3054 |
| 180 | 3025 |
| 165 | 2095 |
| 150 | 2008 |
| 135 | 2000 |
| 120 | 1992 |
The total volume of overburden in cubic meter that could be dumped within the 120 m and 195 m contour levels is
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