FAA Powerplant Written Practice Test

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Prepare for the FAA Powerplant Written Test. Study with flashcards and multiple choice questions, each featuring hints and explanations. Ace your exam with confidence!

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What is the primary purpose of the hopper in the oil supply tank of some dry sump engine installations?

To filter oil contaminants
To reduce warm-up time for oil
To store excess oil
To manage oil pressure

The correct answer is: To reduce warm-up time for oil

The primary purpose of the hopper in the oil supply tank of some dry sump engine installations is to reduce warm-up time for oil. When an aircraft engine is started, it is crucial for the oil to circulate and reach its optimal temperature quickly to ensure effective lubrication and engine performance. The hopper serves as a heat sink, allowing the oil to be pre-heated before it is circulated through the engine's lubrication system. This design helps to mitigate the risks associated with cold oil, such as inadequate lubrication and increased wear on engine components, ultimately enhancing engine efficiency and longevity. Other options may suggest different functions related to oil management, but specifically for the design of the hopper, its role in warming oil before it enters the system is critical during engine startup, making it an essential component in certain engine designs.