Explain how spontaneous combustion is caused by oily rags.
What will be an ideal response?
Heat is generated by the oxidation of oil on the rags. When ignition temperature is reached, the oil and rags begin to burn.
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In production control evaluation, the debriefing is used to _____.
a. identify technical skills and mechanical abilities b. identify personnel-related issues c. obtain observations and opinions d. focus and identify only negative results
What battery rating is tested at 32°F (0°C)?
A) Battery voltage test B) Cold-cranking amperes (CCA) C) Reserve capacity D) Cranking amperes (CA)
Most hydronic heating systems are:
A) Closed piping systems. B) Closed systems in cooling and open in heating. C) Open piping systems. D) Open systems in cooling and closed systems in heating.
How can a technician check to see if the coil and condensing unit on an AC split system are matched?
A) Check to see that both pieces are manufactured by the same company B) The refrigerant line stub out sizes should be the same C) The first two digits of the equipment model number should be the same D) Call the equipment supplier and provide the system model numbers