If the sensor lead on a manifold pressure gauge becomes disconnected while cruising at an altitude of 5000 feet, the instrument would be expected to read approximatelyQuestion 3Select one:a.Zerob.30 inHgc.1013 hPad.25 inHg
Question
If the sensor lead on a manifold pressure gauge becomes disconnected while cruising at an altitude of 5000 feet, the instrument would be expected to read approximatelyQuestion 3Select one:a.Zerob.30 inHgc.1013 hPad.25 inHg
Solution
The manifold pressure gauge measures the pressure in the intake manifold of an aircraft engine. This pressure is lower than atmospheric pressure at sea level and decreases as the aircraft climbs to higher altitudes.
If the sensor lead on the manifold pressure gauge becomes disconnected, the gauge will no longer be able to measure the pressure in the intake manifold. Instead, it will default to measuring the pressure of the surrounding environment.
At sea level, standard atmospheric pressure is 29.92 inHg (inches of mercury). However, at an altitude of 5000 feet, the atmospheric pressure is lower.
Therefore, if the sensor lead on a manifold pressure gauge becomes disconnected while cruising at an altitude of 5000 feet, the instrument would be expected to read the ambient pressure at that altitude, which is approximately 25 inHg.
So, the correct answer is d. 25 inHg.
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