21. Function of pull cord in the belt conveyor system is
22. Detaching hooks are used only with
23. What is the main purpose of jazz rail on underground haulage track?
24. If the wires in the strand and the strands in the rope are laid in opposite direction called . . . . . . . .
25. A 12 tonne diesel locomotive of 60 kW is plying in an underground haulage roadway. The coefficient of adhesion is 0.25 and the maximum gear efficiency is 80%. The speed in m/s at which it will haul a train at its full power is
26. According to IS specifications 1835 of 1961 neither sulphur nor phosporous content in steel for wire rope should exceed . . . . . . . . percent.
27. The length of splice is nearly . . . . . . . . for 25mm diameter rope.
28. Which of the following haulages is one that is situated at a lower level and empties are hoisted up the sloping track?
29. The rope used for monocable aerial rope way.
30. What is the track gauge for tubs of 1.1m3?
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