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PA Mining Law II (referenced)
Practice test questions for the PA Mine Officials' Exam


Progress Indicator:
Question 1 of 20

1.  Each ground-test circuit shall inject a primary current _______% or less of the current transformer and cause each corresponding circuit-interrupting device to open.  (Section 342)

Choices:
  1. 75
  2. 25
  3. 55
  4. 50