INRAT Instrument Rating · Question
How does an aneroid barometer in an altimeter respond to a change in atmospheric pressure?
The aneroid barometer in an altimeter is an evacuated, sealed capsule that contracts (gets smaller) with increasing atmospheric pressure and expands (gets large
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Question: How does an aneroid barometer in an altimeter respond to a change in atmospheric pressure?
Answer options:
- It expands with increasing pressure and contracts with decreasing pressure. ✅ It contracts with increasing pressure and expands with decreasing pressure.
- It remains static regardless of pressure changes.
- It generates an electrical signal proportional to pressure changes.
Correct answer: It contracts with increasing pressure and expands with decreasing pressure.
Explanation: The aneroid barometer in an altimeter is an evacuated, sealed capsule that contracts (gets smaller) with increasing atmospheric pressure and expands (gets larger) with decreasing atmospheric pressure.
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Question explanations
- When flying an NDB approach, what instrument is primarily used to track the inbound course?
- What is the primary characteristic that differentiates a Localizer Performance (LP) approach from a Localizer
- When interpreting a TAF (Terminal Aerodrome Forecast), what does 'PROB30' indicate?
- What is the purpose of an IFR alternate aerodrome requirement?
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