EOm 3 paper 17

81,The weight of the steel guides is...kgf/m?,

5 to 10,

10 to 20,

20 to 55,

60 to 90,

82,The minimum space between two cages is generally?,

20 cm,

30 cm,

40 cm,

50 cm,

83,The tensioning arrangement weights are about ....KN per 100 m depth of shallow mines and ...KN per 100 m depth for deep mines?,

10 ; 5,5 ;

10,10 ; 

20,20 ; 

10,

84,The life of the guide ropes is?,

10 years,

20 years,

5 years,

3.5 years,

85,The factor of safety for the drum winding is?,

6,7,9,10,

Ans: 3, 3, 1, 1, 4