By which of the following lines is the axis of the cylinder or sphere denoted?
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A.
Leader line
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B.
Section line
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C.
Hidden line
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D.
Centre line
Correct Answer:
D. Centre line
Explanation:
The axis of a cylinder or a sphere is represented using a centre line. In technical drawing, centre lines are used to indicate the longitudinal axes of symmetrical objects, as well as the centers of circular features. These lines are typically drawn as thin, long-short dashed lines to provide clarity and distinguish the central alignment from the physical edges or hidden features of the object.
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