61. The tensile strength of stainless steel is . . . . . . . .
62. The equation applicable to energy conservation in ideal fluid flow is . . . . . . . .
63. Suspension gear should be renewed after every . . . . . . . . years.
64. 'Lay' term is used in wire ropes to denote . . . . . . . .
65. Side discharge loader is a . . . . . . . .
66. What is the maximum suitable hauling distance for SDL to give best performance
67. The safety device which is fixed to the last tub of a set when tubs hauled upgradient
68. When a liquid flows through a passage of varying cross section, the total energy of the moving stream remains constant, assuming no friction losses called
69. The coal drill essentially contains . . . . . . . . motor in FLP casing.
70. Impellor of pump rotates rapidly within . . . . . . . .
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