A large amount of oxygen in the exhaust system causes the oxygen sensor to produce which of these?
A) False readings B) Abnormal readings
C) Low voltage D) High voltage
C
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Control transformers generally have screw terminals connected to the primary and secondary leads.
Answer the following statement true (T) or false (F)
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Describe the three types of current.
What will be an ideal response?
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What temperature sensors are used with a commercial air handler?
A) Mixed air, supply air, and preheat sensors B) Mixed air and separated air sensors C) Preheat and postheat sensors D) Preheat, low-temperature, and high-temperature sensors
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What happens to the observed signal if you advance the oscilloscope synchronizing control too far?
a. Masking. b. Distortion. c. Deflection. d. Overloading.
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