Home/Volume-3/Face Mechanisation-1 Volume-3 Face Mechanisation-1 Admin03/08/20240 20 Less than a minute Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 0% Face Mechanisation Face Mechanisation-1 1 / 35 1. The speed of the drill rod in coal with electric coal drill is? 250 rpm 500 rpm 850 rpm 600 rpm 2 / 35 2. The extent of rotation is dependent on the? Twist in the riffle bar Spacing of rachet teeth Both 1 and 2 None of the above 3 / 35 3. Output power of the electric coal drill is? 1 kw 2 kw 3 kw 4 kw 4 / 35 4. The speed of the drill rod in stone with electric coal drill is? 250 rpm 500 rpm 850 rpm 600 rpm 5 / 35 5. In continuous miner the cutting unit is driven by a water-cooled motor of? 25 kw 75 kw 120 kw 200 kw 6 / 35 6. The limiting thickness of the seam for the continuous miner is? 3 m 4 m 5 m 2 m 7 / 35 7. The cutting angle of the drill rod in electric coal drill is? 3 deg 30 deg 65 deg 45 deg 8 / 35 8. The electric coal drill is rated? 2 hrs 1 hr 1/2 hr 1/4 hr 9 / 35 9. The drill used for upward drilling normally for wet drilling is? Jack hammer Drifter Stoper Electric drill 10 / 35 10. The shape of the drill rods used in coal drilling with electric drill is? Eccentric type Vee type Concentric type None 11 / 35 11. The weight of the coal drill with aluminum body? 30 kgf 21.5 kgf 17.5 kgf 15 kgf 12 / 35 12. The cutting unit of continuous miner of borer type the gearing is? Compound wheel type Spur gearing Bevel Sun and planet 13 / 35 13. Number of motors in gathering arm loader is? 2 3 4 5 14 / 35 14. Maximum production rate with Roadheader is....cu.m per hour? 100 80 60 40 15 / 35 15. A cowled fan mounted on the drill and fins on the cover are for the purpose of? Strength Provide cool air to driller Bringing down the temperature of the drill Protection 16 / 35 16. The power is supplied to the coal drill is the? 5 core armoured cable 3 core armoured cable 4 core screened cable 5 core screened cable 17 / 35 17. The efficiency for electric generator is .....but for air compressors it is...? 90 % ; 70 % 70 % ; 90 % 80 % ; 50 % 80 % ; 80 % 18 / 35 18. Limiting gradient for the gathering arm loader is? 1 in 3 1 in 5 1 in 6 1 in 10 19 / 35 19. The electric drill is capable of drilling ....holes each 1.5 m depth in 8 hours shift? 60 70 80 100 20 / 35 20. The daily progress with the continuous miner is? 10 to 20 m 20 to 40 m 40 to 60 m 70 m 21 / 35 21. The operating voltage of the electric coal drill is? 30 v 110 v 225 v 660 v 22 / 35 22. The rake angle of the drill rod in electric coal drill is? 3 deg 30 deg 65 deg 45 deg 23 / 35 23. The rate of penetration of the drill bit with electric coal drill is? 1 m/min 2 m/min 3 m/min 1.5 m/min 24 / 35 24. The daily progress with the Roadheader is? 8 m 10 m 15 m 20 m 25 / 35 25. The limiting gradient for the Roadheader is? 10 deg 15 deg 18 deg 25 deg 26 / 35 26. Gathering arms are operated in gathering arm loader is? Twin crank discs Twin crank shafts Twin motors Connection through conveyor 27 / 35 27. The output from the continuous miner is? 200 t/day 400 t/day 600 t/day 1000 t/day 28 / 35 28. The number of strokes per min in jack hammer is? 1500 2200 2800 3500 29 / 35 29. The slewing angle in gathering arm loader is ...horizontally to axis either side? 20 deg 30 deg 45 deg 60 deg 30 / 35 30. The air consumption is ....cu.m per minute of free air in jack hammer? 1 to 2 2 to 3 3 to 3.5 4 to 4.5 31 / 35 31. The weight of the jack hammer is? 5 to 10 kgf 10 to 15 kgf 15 to 25 kgf 25 to 40 kgf 32 / 35 32. The limiting gradient for the continuous miner used in underground is? 25 deg 30 deg 15 deg 20 deg 33 / 35 33. The weight of the coal drill with steel body? 30 kgf 21.5 kgf 17.5 kgf 15 kgf 34 / 35 34. The speed of the motor of an electric rotary coal drill is reduced by? Sun and planet gearing Helical gear Herringbone gearing Bevel gearing 35 / 35 35. The limiting gradient for the rocker shovel is? 1 in 3 1 in 4 1 in 7 1 in 8 Your score is The average score is 48% LinkedIn Facebook Twitter 0% Admin03/08/20240 20 Less than a minute
