The ‘ratchet and pawl’ mechanism in a jack hammer drill
Post-pillar method of stoping is a variant of
‘Cross-measure borehole method’ is used for
The dry and wet bulb temperatures at the inlet of the airstream are 30 °C and 25 °C, respectively. The corresponding values at the outlet of the airstream are 26 °C and 25 °C, respectively. The psychrometric process that occurs in the airstream is described as
For a mixture of inflammable gases, the lower and upper explosibility limits can be computed using
The code for the lowest category of mineral resources under United Nations Framework Classification (UNFC) system is
In the context of gas testing using flame safety lamp, the correct statement is
For in the range of [-3, 3], the maximum value for the function
is ______ (round off to 1 decimal place).
For the electric delay detonator shown in the figure, the components P, Q and R, respectively, are
The plane stress condition is given by