The sliding gear shifter levers on the quick change gear box are used for:

The sliding gear shifter levers on the quick change gear box are used for:
 
  A) Selecting feeds or threads per inch
  B) Quickly change speeds
  C) Changing the ratio between the longitudinal feed and the cross feed
  D) Quickly changing feeds during a cut to get a varied finish

 Q. 2

Three different centers used in the tailstock are:
 
  A) Hard, soft and pipe centers B) Dead, soft and ball bearing centers
  C) Dead, live and drive centers D) Pipe, ball bearing and dead

 Q. 3

The feed change lever:
 
  A) Changes the feed to a high or low range
  B) Changes the direction of the lead screw
  C) Diverts the feed to either the cross slide or the carriage
  D) Connects or disconnects the carriage handwheel