Question Detail
Question
In the figure below (Worked Example 2, page 27), what is the phase angle at point f in degrees?
Correct Answer
Option A is the correct answer.
Detailed Explanation
From Worked Example 2 (page 27), point 'c' is at 180°, 'e' is at 270°, and 'g' is at 360°. Point 'f' is located exactly halfway between 'e' (270°) and 'g' (360°). The difference is 360 - 270 = 90°. Half of this is 45°. So, point 'f' is at 270° + 45° = 315°.
Hint
Analyze the provided graph on page 27 for Worked Example 2. Identify the phase angles of known points (like crests, troughs, and zeros) and then locate point 'f' relative to them.