Q301
Open questionWhich support gives greater head room clearnace in road ways.
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Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
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Questions
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Q302
Open questionThe smallest absolute value of a parameter that can be measured by a monitoring instrument.
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Q303
Open questionMost of the Indian coal deposits occurs as
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Q304
Open questionDetection of any cracks in roof or sides or signs of weight on supports comes under
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Q305
Open questionThe support used in sound roof with minimum lateral roof movement is
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Q306
Open questionThe timber prop is strongest when load acts
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Q307
Open questionRoof in Giridih coal field consists of
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Q308
Open questionIn case of tapered prop, by increasing roof pressure the tapered end burrs and shows . . . . . . . .
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Q309
Open questionThe percentage of water content used in hydraulic prop.
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Q310
Open questionWhich roof gives rarely warning before collapse
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Q311
Open questionThe reaction of offered by the prop to the strata called
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Q312
Open questionThe change in induced stress in rock can be determined by using
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Q313
Open questionThe yeilding props which accept the maximum load with minimum yeild called
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Q314
Open questionWhen roof is tapped with a stick, if ringing sound indicates the roof is
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Q315
Open questionThe coals of Telangana are graded on
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Q316
Open questionThe hydraulic props are specified by the
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Q317
Open questionLength of flat base piece is . . . . . . . . used for setting props.
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Q318
Open questionThe fluid pH value used in hyraulic prop.
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Q319
Open questionWhich pillar will carry greater load.
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Q320
Open questionIncrease of water percolation from roof or increased flow of water indicates the need of
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