Mining Engineering
2022 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE MN 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 31
Open questionMNNAT1 markNeeds review
In a leveling survey, a reading is taken as 2.25 m. However, along the line of sight there is deflection of 20 cm with respect to vertical position of the staff. The correct reading, in m is ______. (round off to two decimal places)
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 32
Open questionMNNAT1 markNeeds review
Water flows through a vertical sand column of cross sectional area 400 mm² and length 300 mm. For a water head of 600 mm, quantity of seepage water is 100 mm³/min. The hydraulic conductivity of the sand column, in mm/min is ______. (round off to three decimal places)
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 33
Open questionMNNAT1 markNeeds review
The modified Lauffer diagram as shown in the figure relates to roof span, RMR and stand-up time. In a metal mine, roof span of a drive is 4 m. If the RMR of the rock mass changes from 40 to 60, then the stand-up time increases by a factor of ______. (round off to two decimal places)
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer