Which is a primary safety requirement when replacing an older furnace?

A) Properly grounding the furnace cabinet B) Removing the jumper
C) Relocating the thermostat D) Properly discarding used materials


A

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Water in a volume has a vapor mass of 1 kg and a liquid mass of 4 kg. The quality is:

A) 0.2 B) 0.25 C) 0.75 D) 0.8

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To finish a splice and ensure complete protection, it should be covered with how many layers of vinyl electrical tape?

a. One b. Two c. Three d. Four

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Two technicians are discussing a catalytic converter. Technician A says the exhaust mixture must fluctuate between rich and lean for the best efficiency. Technician B says the air-fuel mixture must be leaner than 14.7:1 for best performance from a three-way catalytic converter. Which technician is correct?

A) Technician A B) Technician B C) Both technicians D) Neither technician

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A vehicle with a brake assist system (BAS) will increase braking pressure during ________ stops

A) Panic B) Normal C) Acceleration D) Wet weather

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