41. In centrifugal pump of . . . . . . . . construction impeller is mounted on the motor shaft.
42. Underground transport arrangements are generally divided into . . . . . . . . categories.
43. The temperature of the coal drill is bring down by using . . . . . . . . fan.
44. Which valve to enable the pump to be primed with water from the delivery column before starting up, and also small pump is not generally provided.
45. Head gear should with stand
46. In gathering arm loader, Jib end can also be slewed through a horizontal plate so as to make an angle of . . . . . . . . to the axis of the machine either side.
47. Ropes used for CCMS.
48. Difference between total discharge head and total suction head called . . . . . . . .
49. If the mine car type is Gable bottom, the mode of unloading provided is . . . . . . . .
50. The locked coil rope not used for . . . . . . . .
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