Electrical (A6)Câu 79 / 120
The gauge or module that displays engine coolant temperature relies on a sensor whose resistance:
a.Changes with temperature (a thermistor)
b.Stays constant regardless of temperature
c.Only works above 200 degrees
d.Produces AC voltage
Giải thích
Most coolant temperature sensors are thermistors whose resistance falls as temperature rises (negative temperature coefficient). The computer or gauge interprets this changing resistance as temperature. A faulty sensor can cause inaccurate readings and driveability or fan-control problems.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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