List of top Questions asked in TS PGECET- 2026

Barton classified the rock mass on the basis of
The ratio of the specific weight of an intact rock to that of loose rock is
Maximum shear stress in a Mohr's Circle is
Massive sandstone in immediate roof delays the local fall in goaf of a coal mine. Under this condition crushing of the pillars at outbye side is called
When the two principal stresses are equal and are alike, the resultant stress on any plane is
Creep occurs due to
Shear strength of a rock joint is not dependent on
In a slake durability test, the weight loss of a rock sample was \(7\%\). Then its durability index is
Increase in moisture content of rock
Identify the active support, out of support categories given for an underground coal mine
The angle of draw in a trough subsidence helps in
A rock specimen was tested under compression. The lateral and longitudinal strains were found to be \(0.8\%\) and \(4\%\) respectively. The Poisson's ratio of the specimen is
The average Young's modulus and Poisson's ratio values of a limestone sample are \(60\ \text{MPa}\) and \(0.3\) respectively. The shear modulus in MPa is
If the rock has RMR value \(72\), then what will be its roof classification?
The load at which an axially loaded prop reaches its elastic limit or at which it begins to buckle is called
If Poisson's ratio of a rock sample is \(0.25\), then the relationship among the modulus of elasticity \((E)\), modulus of rigidity \((G)\), and bulk modulus \((K)\) is
In a Mohr--Coulomb failure criterion, the ratio of the uniaxial compressive strength to the tensile strength is
A transition curve is provided to
Random errors are best minimized by
An area of \(100\,\text{m}^2\) is measured on a plan having an R.F. of \(\dfrac{1}{800}\). If the R.F. were changed to \(\dfrac{1}{2000}\), the area on the new plan in \(\text{m}^2\) would be
The magnetic bearing of a line AB is \(S\,32^\circ E\) and the magnetic declination is \(4^\circ E\). What is the true bearing of the line AB?
The load on a prop when the upper member is beginning to slide is called
In opencast blasting, delay detonators are used to
The term “Powder Factor” refers to
In the etch method, the acid used to measure borehole deviation is