All energy sources must be _____ to prevent equipment damage or personal injury.

All energy sources must be _____ to prevent equipment damage or personal injury.
 
  a. charged
  b. reduced
  c. isolated
  d. identified

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[Ques. 2] Use a _____ to load-test the driver to determine if the power being used exceeds the maximum on the
  nameplate.
 
  a. clamp-on ammeter
  b. pyrometer
  c. voltmeter
  d. ohmmeter

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[Ques. 3] If the cause of the problem is not immediately understood, the process of _____ is often the procedure of choice.
 
  a. trial and error
  b. breakdown
  c. disassembly
  d. elimination

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[Ques. 4] A rule of thumb for deciding whether to repair or replace a pump is that if the repair costs more than _____,
  replace it.

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[Ques. 5] Before removing a pump from the system, check the bleeder valves before breaking the connection to ensure
  that there is _____ pressure.
 
  a. minimum
  b. zero
  c. steady
  d. sufficient