71,The ratio of pay load to gross load for skip winding
is...and for cage winding is...?,
0.6 ; 0.35,
0.35 ; 0.6,
0.8 ; 0.6,
0.6 ; 0.8,
72,The groove of the head gear pulley should be ....of the
circumference of the rope is in contact with the groove?,
1/4,
1/2,
1/3,
3/4,
73,The number of spokes in head gear pulley
are?,
15,19,21,25,
74,The cage chains should be anneleaned atleast once in?,
3
months,
6 months,
9 months,
12 months,
75,The components of cage arrachements chanins; links;
shackeles; are exempted from periodical heat treatment if they are made
of?,
wrought iron,
Mild steel,
0.5 % carbon steel,
1.5 % Manganese steel,
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