Which of the phasor diagrams shows the first minimum for five equally spaced in-phase sources?
A) 1
B) 2
C) 3
D) 4
E) 5

Question

Which of the phasor diagrams shows the first minimum for five equally spaced in-phase sources?
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Quizplus · Accepted Answer

The phasor diagram in option C shows the first minimum for five equally spaced in-phase sources. The sources would be cancelling each other out when their respective phasors are at 180 degrees to each other, which is shown in option C. In options A, B and E, the phasors are not at the required angle to show complete cancellation, while in option D, there are only four phasors instead of five.

Which of the Phasor Diagrams Shows the First Minimum for Five