List of top Mining Engineering Questions asked in TS PGECET

In any underground coal mine which of the following occurs first?

“Cross-measure borehole method” is used for

A flat long wall panel is mined out at an area having subsidence factor ‘a’. The measured maximum subsidence on the surface is ‘S’ for a mining height of ‘m’. The subsidence is sub critical, if

Exposure of weak roof in junctions of a development district in a coal mine can be decreased by

The hydraulic sand stowing pipeline layout should be such that

Massive sandstone in immediate roof delays the local fall in roof of a coal mine. Under this condition, crushing of the pillars at out-bye side is called

Given S is the setting load and Y is the yield load of a hydraulic prop, the correct relationship between S and Y is

Which one of the following is the most likely mode of slope failure for waste dump?

Which one of the following supports does not require a power pack for its operation?

Dilatancy of rock is associated with

In RMR, Rock Quality Designation (RQD) 41% to 60% indicates a rock as

The property that cannot be determined from uni-axial compressive strength test of a rock sample fitted with strain gauges is

Out of the support categories given for an underground coal mine, identify the “active support”

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

Match the following: $$ \begin{array}{ll|l} \text{Instrument} & & \text{Measurement} \\ \hline P & \text{Flat jack} & 1.\ \text{In-situ stress in rock} \\ Q & \text{Borehole deformation gauge} & 2.\ \text{Load} \\ R & \text{Tape extensometer} & 3.\ \text{Bed separation resistance} \\ S & \text{Bore hole penetrometer} & 4.\ \text{Roof convergence} \\ \end{array} $$

The term “bulking factor” refers to

The ratio of specific weight of an intact rock to that of loose rock is called as

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

If only two members form a truss joint and no external load or support reaction is applied to the joint, then the members

A multi point borehole extensometer is used to monitor

The angle in degrees at which a ridge line intersects contours is

The basic concept behind GPS is