What type of piping material must not be used if the hydronic system contains a glycol-based anti-freeze solution?
a. Galvanized pipe
b. Copper tubing
c. PVC pipe
d. Stainless steel pipe
c. PVC pipe
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In an autotransformer starter, what happens when the START button is pressed?
What will be an ideal response?
Which of the following is LEAST-Likely the cause of compression loss?
A. Engine knock B. Broken piston rings C. Blown head gasket D. Burned valves
What should be the first action taken when aiding someone who is being shocked by electricity?
What will be an ideal response?
Which of the following is not a purpose for grounding equipment associated with an ungrounded system?
A. Even though the system is not grounded, metallic enclosures for the system conductors must be grounded and bonded to protect against shock hazards. B. If the system is not required to be grounded, there is no requirement for the equipment associated with the ungrounded system to be grounded. C. Even though the system is not grounded, grounding the enclosure provides a path for overvoltages to flow to the earth. D. Even though the system is not grounded, bonding the enclosures together provides a path for fault current to flow over.