81. Skip is used for (unpartioned sumps)
82. It is the ratio between the interruption to the motion of a car along a straight level track with constant speed to the total weight of car.
83. The distance between head gear pulley and detaching plate of the rope capel is . . . . . . . .
84. The cutter boom of continuous miner consists of
85. The ratio between water H.P. to the B.H.P. of drive motor called . . . . . . . .
86. The type of coal drill bits used for coal drilling . . . . . . . .
87. Air leg relieves the . . . . . . . . of the operator.
88. The maximum value of the efficiency varies with the size and make of the pump and it may range from . . . . . . . . for small pumps.
89. The example for the ropes subjected to shock loads.
90. Large head gear pulley minimises . . . . . . . . stresses in the winding rope.
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