QCAA Aerospace Systems Practice Questions - QCAA Aerospace Systems External Assessment (Queensland) Exam

Galvanic corrosion on an aircraft airframe occurs primarily when which of the following conditions is met?

A single homogeneous metal is exposed to high ambient temperatures in dry air Composite carbon fibers are exposed to ultraviolet radiation in the stratosphere Two dissimilar metals are in direct electrical contact in the presence of an electrolyte Pure aluminum is anodized with an oxide surface coating

Correct Answer:

Two dissimilar metals are in direct electrical contact in the presence of an electrolyte

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