Home/Volume-3/Face Mechanisation-1 Volume-3 Face Mechanisation-1 Admin03/08/20240 35 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 output from the continuous miner is? 200 t/day 400 t/day 600 t/day 1000 t/day 2 / 35 2. The efficiency for electric generator is .....but for air compressors it is...? 90 % ; 70 % 70 % ; 90 % 80 % ; 50 % 80 % ; 80 % 3 / 35 3. The daily progress with the continuous miner is? 10 to 20 m 20 to 40 m 40 to 60 m 70 m 4 / 35 4. The limiting thickness of the seam for the continuous miner is? 3 m 4 m 5 m 2 m 5 / 35 5. Output power of the electric coal drill is? 1 kw 2 kw 3 kw 4 kw 6 / 35 6. The operating voltage of the electric coal drill is? 30 v 110 v 225 v 660 v 7 / 35 7. 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 8 / 35 8. 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 9 / 35 9. Maximum production rate with Roadheader is....cu.m per hour? 100 80 60 40 10 / 35 10. Limiting gradient for the gathering arm loader is? 1 in 3 1 in 5 1 in 6 1 in 10 11 / 35 11. The weight of the jack hammer is? 5 to 10 kgf 10 to 15 kgf 15 to 25 kgf 25 to 40 kgf 12 / 35 12. The limiting gradient for the continuous miner used in underground is? 25 deg 30 deg 15 deg 20 deg 13 / 35 13. The daily progress with the Roadheader is? 8 m 10 m 15 m 20 m 14 / 35 14. The cutting unit of continuous miner of borer type the gearing is? Compound wheel type Spur gearing Bevel Sun and planet 15 / 35 15. 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 16 / 35 16. 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 17 / 35 17. The rake angle of the drill rod in electric coal drill is? 3 deg 30 deg 65 deg 45 deg 18 / 35 18. The speed of the drill rod in coal with electric coal drill is? 250 rpm 500 rpm 850 rpm 600 rpm 19 / 35 19. The weight of the coal drill with aluminum body? 30 kgf 21.5 kgf 17.5 kgf 15 kgf 20 / 35 20. In continuous miner the cutting unit is driven by a water-cooled motor of? 25 kw 75 kw 120 kw 200 kw 21 / 35 21. 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 22 / 35 22. The limiting gradient for the Roadheader is? 10 deg 15 deg 18 deg 25 deg 23 / 35 23. Number of motors in gathering arm loader is? 2 3 4 5 24 / 35 24. The electric drill is capable of drilling ....holes each 1.5 m depth in 8 hours shift? 60 70 80 100 25 / 35 25. The drill used for upward drilling normally for wet drilling is? Jack hammer Drifter Stoper Electric drill 26 / 35 26. The cutting angle of the drill rod in electric coal drill is? 3 deg 30 deg 65 deg 45 deg 27 / 35 27. The speed of the drill rod in stone with electric coal drill is? 250 rpm 500 rpm 850 rpm 600 rpm 28 / 35 28. Gathering arms are operated in gathering arm loader is? Twin crank discs Twin crank shafts Twin motors Connection through conveyor 29 / 35 29. The electric coal drill is rated? 2 hrs 1 hr 1/2 hr 1/4 hr 30 / 35 30. The shape of the drill rods used in coal drilling with electric drill is? Eccentric type Vee type Concentric type None 31 / 35 31. The limiting gradient for the rocker shovel is? 1 in 3 1 in 4 1 in 7 1 in 8 32 / 35 32. The weight of the coal drill with steel body? 30 kgf 21.5 kgf 17.5 kgf 15 kgf 33 / 35 33. The slewing angle in gathering arm loader is ...horizontally to axis either side? 20 deg 30 deg 45 deg 60 deg 34 / 35 34. The number of strokes per min in jack hammer is? 1500 2200 2800 3500 35 / 35 35. The speed of the motor of an electric rotary coal drill is reduced by? Sun and planet gearing Helical gear Herringbone gearing Bevel gearing Your score is The average score is 50% LinkedIn Facebook Twitter 0% Admin03/08/20240 35 Less than a minute
