- Tricone rock roller bit
- Diamond drill bit
- Steam hammer
- Rotary drill bits
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) Which of the following drill bits are specially used for drilling very hard materials?
Solution:
A diamond drill bit is a very effective tool for drilling hard materials. These bits get their extra cutting power from little pieces of diamond powder embedded in them
WhatsApp
Facebook
Related Questions
- S wave can travel through it.
- S wave cannot travel through it.
- P wave can travel through it.
- P wave cannot travel thought it.
- CIM
- RIM / Inspector of mines
- Owner of the mines
- Sec. 12 Committee
- Safety committee
- O/A/M
- Manager
- Agent
- All above
- Owner
- Manager , Engineer , Electrical Supervisor
- Agent .Manager .Engineer
- Owner ,Agent .Manager ,Engineer
- Owner ,Agent .Manager ,Engineer, Electrical Supervisor ,Asst.manager ,Over man ,Mining Sardar & All other persons connected with use of electricity
- All of the above
- Manager
- Director of Mine Safety
- Director of the company
- Director (Pers.)
- Electrical Superintendent
- P-wave
- S-wave
- Rayleigh wave
- Radio wave
- Drums with helical grooves
- Plain cylindrical drums
- Both are equally preferred
- None of the above
- Rotary-percussive drilling
- Percussive drilling
- Rotary drilling
- Hydraulic drilling
- Single riveted butt joint
- Single riveted lap joint
- Double riveted butt joint
- Double riveted lap joint
Comment
Top Contributors
Sannith
All Categories
- Central Electricity Authority Regulations (40)
- Drilling and Blasting (48)
- GATE 2024 (10)
- General (4)
- Geology (6)
- Mines Act 1952 (50)
- Mines Creche Rules (50)
- Mining Machinery (50)
- MINING MCQs (10)
- MMR 1961 (7)
- National Conference (7)
- Rock Mechanics (1)
- Surveying (1)
- THE MINES RESCUE RULES, 1985 (60)
- Winning and Working (22)