11. Ropes of stainless steel not used in . . . . . . . .
12. Figure shows a two pulley system for hoisting a load of 10 kN. The coefficient of friction between each pulley and the rope is 0.2. The vertical and horizontal distances between the centers of the pulleys are 25m and 16m respectively. The tensions T1 and T2 respectively in kN are
13. If the track gauge of underground haulage is 0.6m, radius of curve 2m, Velocity of train 2m/sec, then find out the amount of super elevation.
14. White metal temperature not exceeding °C during pouring.
15. A conveyor is 600m long carrying coal having bulk density 0.8 t/m3 up a gradient of 1 in 60 at the rate of 220 t/hr. If the belt width (w) is 0.75m and cross-sectional area of the material is 0.1w2, determine belt speed?
16. A cage weighing 12000 kg is raised by four chains each making an angle of 30° with the vertical. The tension in each chain in kN is
17. In koepe winders, the power is transmitted through the friction between
18. The object of normalising is to remove . . . . . . . .
19. Corrosion of the rope can be delayed by using . . . . . . . .
20. It is the ratio between resistance to the motion of a car along a straight level track with constant speed to the total weight of car
Read More Section(Mining Machinery)
Each Section contains maximum 100 MCQs question on Mining Machinery. To get more questions visit other sections.