The method of bearing removal that requires the shaft to be prepared in advance is the _____ method. ...

The method of bearing removal that requires the shaft to be prepared in advance is the _____ method.
 
  a. puller
  b. hydraulic removal
  c. temperature removal
  d. cutting torch

 Q. 2

The typical start up sequence for a direct spark ignition system is
 
  A) Combustion blower, indoor blower, igniter, and gas valve all energized simultaneously
  B) Indoor blower energized, igniter energized and gas valve energized, flames sensed, combustion blower energized after time delay
  C) Combustion blower pre-purge, igniter and gas valve energized, flames sensed, indoor blower energized after time delay
  D) Gas valve energized, igniter energized after delay, flames sensed, combustion blower and indoor blower energized

 Q. 3

Angular-contact ball bearings are most often mounted in pairs _____ each other.
 
  a. perpendicular to
  b. separated from
  c. staggered from
  d. in opposition to