List of top Questions asked in AP ECET Mining Engg- 2025

The optimum or stochiometric Methane -air mixture at which violent fire damp explosion takes place is
The apparatus used to administer pure oxygen to an unconscious persons or persons effected by noxious gasses is
The most important constituents in Gas mask is
Which of the following fire extinguisher is not used for quenching of fires involving electrical equipment
If the speed of a centrifugal fan is increased by 2 times. Then the corresponding power consumption of fan
MSA methanometer works based on the principle of
The composition of Black damp is
Abnormal change in barometric pressure in mine workings indicates
Given the following information related to Natural Ventilation Pressure. Tu - Absolute temperature of upcast shaft, Td - Absolute temperature of downcast shaft, D - Depth of the shaft. The formula for motive column is
Identify the method of stoping preferred under the following conditions of the ore body
Type of Ore body - Thin
Dip - Flat
Strength of Ore - Strong
Strength of walls - Strong
Two mine haulage roadways A and B are having similar cross-sectional areas, surface characteristics, but differ in lengths. The length road way A is 100 m and that of road way B is 200 m. The ratio of their resistances R\(_A\): R\(_B\) is
Three road ways A, B and C are connected in parallel and are having same cross-sectional area and surface characteristics. But length of three roadways are 100 m, 200m and 300 m respectively. The ratio of Quantity of air flowing through the roadways Q\(_A\): Q\(_B\): Q\(_C\) is
Sub-level stoping method belongs to
Identify the type of centrifugal fan having non-over loading power characteristics
The roadway driven to interconnect the shaft and ore body is known as
Identify the method of stoping used under the following conditions of ore body
Type of Ore body - Massive
Strength of Ore - Weak
Strength of Walls - Week or Strong
During development of metalliferous deposits, the method of connecting two levels from upper level to lower level is known as
The method of stoping NOT suitable if the ore body is subjected to Spontaneous heating is
During development of Metalliferous deposits, the pillar left in its in-situ condition to protect upper level is known as
Rill stoping method is also known as
The method of stoping used for the extraction of Narrow vein deposits
The width of the heading in Board and Pillar method of working depends on
A coal heading is of 4 m wide and 2.5 m height has an advance of 1 m per cycle. The amount of explosive used is 5 kg per blast. Taking specific gravity of coal as 1.2 t/m\(^3\). The powder factor is
In Board and Pillar method of mining with Hydraulic stowing, the preferred method of extraction of pillars is
In sand stowing in-correct Hydraulic profile leads to