Q181
Open questionPoisson ratio for rock is generally taken as
Select an option to see the answer and solution.
Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
320
Questions
10/16
Page
Pick an option on a question to see the right answer and solution.
Q182
Open questionSupport at the goof edge is made strongest. Why
Select an option to see the answer and solution.
Q183
Open questionIn flaggy rocks when bedding planes on them less than
Select an option to see the answer and solution.
Q184
Open questionCog are required under regulations at
Select an option to see the answer and solution.
Q185
Open questionPrime coaking coal occur in India in the state of
Select an option to see the answer and solution.
Q186
Open questionThe length of slot and wedge bolt.
Select an option to see the answer and solution.
Q187
Open questionProtruding ends of roof bolts can be used to suspend.
Select an option to see the answer and solution.
Q188
Open questionSound, pressure level is measured in
Select an option to see the answer and solution.
Q189
Open questionPoissons ratio is defined as
Select an option to see the answer and solution.
Q190
Open questionL/W faces with caving have called difficulties in roof control are depth less than nearly . . . . . . . .
Select an option to see the answer and solution.
Q191
Open questionMost of the hydraulic props for use in mines do not incorporate the following devices.
Select an option to see the answer and solution.
Q192
Open questionDuring depillaving operations, if the roof is laminated, local fall occurs . . . . . . . . hours after props are withdrawn
Select an option to see the answer and solution.
Q193
Open questionIn thick seam when its thickness is equal to or more than . . . . . . . . m in Indian coal seams.
Select an option to see the answer and solution.
Q194
Open questionJharia coal fields occupies an area of
Select an option to see the answer and solution.
Q195
Open questionThe prop offers the maximum . . . . . . . . to roof.
Select an option to see the answer and solution.
Q196
Open questionWhich roof is treacherous and most unreliable in mines.
Select an option to see the answer and solution.
Q197
Open questionThe support provides a continuous cover all along the face by canopies placed side by side called
Select an option to see the answer and solution.
Q198
Open questionSupport system design based on RMR depends on the following.
Select an option to see the answer and solution.
Q199
Open questionMaximum heating value of coal depend on the percentage is
Select an option to see the answer and solution.
Q200
Open questionIn a tunnel 2 m × 2 m; the support of weak strata near a dyxe, intrusion is done by
Select an option to see the answer and solution.