Question Detail
Question
Worked Example 2: In the figure on 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 on page 27: Point 'c' is at 180°, point 'e' is at 270°, and point 'g' is at 360°. Point 'f' is halfway between 'e' (270°) and 'g' (360°), which is 270° + (360°-270°)/2 = 270° + 45° = 315°.
Hint
Identify the phase angles of the marked points on the sine wave graph (0°, 90°, 180°, 270°, 360°) and find the position of 'f' relative to them.