Home/Volume-1/Boring and Drilling Volume-1 Boring and Drilling Admin02/08/20242 86 Less than a minute Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% Boring Boring and Drilling 1 / 21 1. In etch method which acid is used to measure borehole deviation? sulfuric acid hydrochloric acid nitric acid hydrofluoric acid 2 / 21 2. Single tube core barrel is suitable for recovering core from rocks of? soft friable homogeneous hard 3 / 21 3. Bore hole survey means..? Measurement of deviation Measurement of depth Measurement of time taken None of the above 4 / 21 4. Controlling the course of a borehole so as to follow predetermined path is...? Deviation of borehole wireline drilling control drilling directional drilling 5 / 21 5. Manual drilling is possible up to max depth of.....m? 15 30 45 60 6 / 21 6. The device used to catch broken rods under a joint in the borehole? crow's foot or spiral worm sludger screw feed bulldog 7 / 21 7. Which is used for raising and lowering the rods of circular section? Bulldog sludger core barrel retaining key 8 / 21 8. The operation of tracing the broken and lost parts in the hole and withdrawing them to the surface is known as...? lining the borehole drilling borehole survey fishing the borehole 9 / 21 9. Bentonite chemical is used for? sealing cracks preparing mud flush surveying borehole deviation none of the above 10 / 21 10. The sludge or cuttings in the borehole are removed with the help of? core barrel sludger retaining key bulldog 11 / 21 11. The improved technique of removal of core during drilling without raising the drill rods? Double tube core barrel X-ray drilling wireline drilling side coring 12 / 21 12. Double tube core barrel is suitable for rocks of? hard homogeneous soft and friable none of the above 13 / 21 13. The percussive drilling is applicable up to max depth of ....m? 200 300 500 700 14 / 21 14. Which is used for raising and lowering the rods of square section? Bulldog sludger retaining key none of the above 15 / 21 15. The core (dia in mm) size obtained with NX size? 21 28 40 54 16 / 21 16. In percussive drilling the rock is broken by following action? crushing chipping both none of above 17 / 21 17. Diamond drilling is applicable up to a max depth of .....m? 500 1000 3000 5000 18 / 21 18. The drilling rods are made of? cast iron steel Ni-cr cast steel 19 / 21 19. What is the purpose of lining the borehole? to prevent caving of sides to prevent water percolation to ease drilling operation none of the above 20 / 21 20. The feed mechanism is not necessary beyond the depth of....m? 30 40 50 60 21 / 21 21. Bore hole deviation is .....deg for 30m? 1 2 3 4 Your score is The average score is 76% LinkedIn Facebook Twitter 0% Admin02/08/20242 86 Less than a minute
Very very valuable information questions
Thank you