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- Question 1 of 17
The coefficient of variation of a dataset is measured byCorrectIncorrect
- Question 2 of 17
Assuming sin(1) = 0.841and sin(3) = 0.141, the Lagrangian linear interpolating polynomial, for the function f (x) = sin(x) defined on the interval [1, 3] and passing through the end points of the interval, isCorrectIncorrect
- Question 3 of 17
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) isCorrectIncorrect
- Question 4 of 17
A cylindrical rock specimen is uniaxially loaded under compression and fails at 50 MPa. The fracture plane is inclined at an angle of 450 with the axial direction. The normal and shear stresses respectively on the failure plane in MPa areCorrectIncorrect
- Question 5 of 17
In a surface mine, sound pressure level at a location generated by operation of a dozer and a drill respectively are 80 dBA and 60 dBA, when operated independently. The sound pressure generated by the dozer compared to the drill is higher by a factor ofCorrectIncorrect
- Question 6 of 17
As per the Indian Electricity Rules 1956, the maximum permissible length of a flexible cable used with an electric rope shovel in m isCorrectIncorrect
- Question 7 of 17
The equipment that is NOT used in hard rock metal mining drivage isCorrectIncorrect
- Question 8 of 17
The roof bolt that follows the principle of point anchorage isCorrectIncorrect
- Question 9 of 17
Equipment used in mining of placer deposits isCorrectIncorrect
- Question 10 of 17
A dump truck powered by 350 kW engine is running at a speed of 35 km/h. Considering the transmission efficiency of the truck as 85%, the rim pull of the truck in kN isCorrectIncorrect
- Question 11 of 17
Nystagmus is a miner’s disease associated withCorrectIncorrect
- Question 12 of 17
Apart from mining of coal, the longwall mining method has been practiced for mining the deposits ofCorrectIncorrect
- Question 13 of 17
The three segments, whose synchronous functioning is essential for GPS operations, areCorrectIncorrect
- Question 14 of 17
When a double ended ranging drum shearer cuts coal in a longwall face,CorrectIncorrect
- Question 15 of 17
The match the following
Mine gas Principal constituent
P Stink damp 1 CO
Q White damp 2 H2S
R Black damp 3 CH4
S Fire damp 4 CO2CorrectIncorrect
- Question 16 of 17
Continuous miner and shuttle car combination is NOT applicable in mining withCorrectIncorrect
- Question 17 of 17
Contours in a topographic mapCorrectIncorrect