A difference between a straight heat-cool thermostat and a heat pump thermostat is that:
A) Y and W swap functions.
B) Y is energized in both heating and cooling.
C) Y is energized in heating instead of cooling.
D) Heat pump thermostats do not energize the fan in the heating cycle.
B
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Which of the following is the primary material for piping?
a. Glass b. Carbon steel c. Plastic-lined material d. Solid plastic
An engine failed because it was overheated. Technician A says that a coolant temperature sensor could be defective. Technician B says that the fan relay could be defective. Who is right?
A. Technician A only B. ?Technician B only C. Both A and B D. ?Neither A nor B
What does the HSI in HSI model stand for?
a. Highly Suspicious Intent c. Habitat Suitability Index b. Habitat Sustainability Index d. Human Sustainability Index
When an aligned section is taken, the sectional view is shown as if the cutting plane is rotated to a plane perpendicular to the line of sight.
Answer the following statement true (T) or false (F)