List of top Mining Engineering Questions

For a cylindrical sample of cross-sectional area $ A $, length $ L $, Young’s modulus $ E $ and axial load $ P $, the strain energy stored is
Poisson’s ratio is the
Out of the support categories given for an underground coal mine, identify the “active support”
Every line has two bearings such as fore bearing and back bearing. If fore bearing is less than $180^\circ$, then what will be the back bearing?
One of the tacheometric constants is additive, the other constant is
The length of the tangent of a simple circular curve of radius $R$ and angle of deflection $\Delta$ is given by
A multi point borehole extensometer is used to monitor
If only two members form a truss joint and no external load or support reaction is applied to the joint, then the members
The angle in degrees at which a ridge line intersects contours is
The basic concept behind GPS is
The drivage driven from one coal seam to adjacent coal seam in underground coal mines is called as
The starting point of shaft at the ground surface is called
Insufficient stemming causes
Match correctly for method of drilling given in column A to principle of rock cutting in column B: $$ \begin{array}{ll|l} \text{Column A (Method of drilling)} & & \text{Column B (Principle of rock cutting)} \\ \hline P & \text{Diamond drilling} & 1.\ \text{Impact action} \\ Q & \text{Percussive drilling} & 2.\ \text{Thermal spalling} \\ R & \text{Rotary roller drilling} & 3.\ \text{Rotary abrasive} \\ S & \text{Jet piercing} & 4.\ \text{Cutting \& Ploughing} \\ \end{array} $$
Bauxite is
Which of the following is added as sensitizers in explosive?
Kolar Gold Field (KGF) deposit is an example of
The angle, which the fault plane makes with the vertical plane is referred to as
An overturned fold in which two limbs dip towards each other is named as
Placer Gold deposits are mostly
Information for a drilling operation in an overburden mine is given: Volume of rock blasted per round = \(3.2 \times 10^5\ \text{m}^3\)
Number of blast holes = 100
Drill hole diameter \(D = 200\ \text{mm} = 0.2\ \text{m}\)
Length of subgrade drilling = \(8D = 1.6\ \text{m}\)
Stemming length = \(25D = 5\ \text{m}\)
Bench height = 30 m
Powder factor = \(3.2\ \text{m}^3/\text{kg}\) Find the explosive per unit charge length (kg/m), rounded to two decimals).
The shaft-top coordinates of two vertical shafts are given below. The depth of the shaft A and B are 200 m and 149 m, respectively. The downward gradient of the line joining the bottom of the two shafts in degrees, is __________. (round off to two decimal places)
Match the semi-variogram shape with the model name and the property.
In a uniaxial compressive strength test, a rock sample of diameter 50 mm fails at an angle of $60^\circ$ as shown. If the peak load at failure is 120 kN, the normal and shear stresses on the failure plane, in MPa, are __________________ and __________________.
A coal mining company examines the option of buying two types of dumpers with the following details.
In order to minimize the operating cost, the optimum fleet of dumpers of Type-1 and Type-2, respectively are