TUNNEL ENGINEERING in single video 😊👍🏻

🚇 TUNNEL ENGINEERING – 15 MCQs (Answer key साथ में) --- Q1. A tunnel is best defined as: A. A vertical underground shaft B. A horizontal or nearly horizontal underground passage C. A surface roadway D. An open excavation ✅ Answer: B. A horizontal or nearly horizontal underground passage --- Q2. Which tunnel shape is most commonly used in practice? A. Circular B. Rectangular C. Egg-shaped D. Horseshoe ✅ Answer: D. Horseshoe --- Q3. The cut and cover method of tunnelling is generally used for: A. Very deep tunnels B. Long mountain tunnels C. Shallow depth tunnels D. Underwater tunnels ✅ Answer: C. Shallow depth tunnels --- Q4. Drilling and blasting method is most suitable for tunnelling in: A. Soft clay B. Loose sand C. Hard rock D. Marshy soil ✅ Answer: C. Hard rock --- Q5. Which method is best suited for soft soil tunnelling? A. Drilling and blasting B. Cut and cover C. Shield tunnelling D. TBM in rock ✅ Answer: C. Shield tunnelling --- Q6. The main purpose of tunnel lining is to: A. Improve appearance B. Reduce excavation cost C. Provide stability and prevent seepage D. Increase tunnel length ✅ Answer: C. Provide stability and prevent seepage --- Q7. Which of the following is NOT a tunnel support system? A. Rock bolts B. Steel ribs C. Shotcrete D. Dredging ✅ Answer: D. Dredging --- Q8. TBM stands for: A. Tunnel Boring Machine B. Temporary Boring Method C. Tube Boring Mechanism D. Trench Boring Machine ✅ Answer: A. Tunnel Boring Machine --- Q9. Which tunnel is mainly constructed for water conveyance? A. Traffic tunnel B. Utility tunnel C. Hydraulic tunnel D. Mining tunnel ✅ Answer: C. Hydraulic tunnel --- Q10. The process of meeting of two advancing tunnel faces is called: A. Alignment B. Grouting C. Breakthrough D. Lining ✅ Answer: C. Breakthrough --- Q11. Which method provides mechanized, fast, and accurate tunnelling? A. Fore-poling method B. Needle beam method C. Tunnel boring machine D. Cut and cover ✅ Answer: C. Tunnel boring machine --- Q12. Ventilation in tunnels is mainly required to: A. Increase strength B. Remove dust and fumes C. Reduce seepage D. Improve alignment ✅ Answer: B. Remove dust and fumes --- Q13. Egg-shaped tunnel sections are generally used for: A. Road tunnels B. Railway tunnels C. Sewer tunnels D. Water supply tunnels ✅ Answer: C. Sewer tunnels --- Q14. Which of the following is a major tunnel hazard? A. Silting B. Roof fall C. Scouring D. Settlement ✅ Answer: B. Roof fall --- Q15. Which lining material is most commonly used in modern tunnels? A. Brick B. Timber C. Concrete D. Cast iron ✅ Answer: C. Concrete --- 🔑 QUICK MEMORY (Exam Safe) Horseshoe → Most common Shield → Soft soil TBM → Long tunnels Cut & cover → Shallow depth Breakthrough → Face meeting ---