-What is the sine of the phase angle in the circuit in Figure ?
A) 0.57
B) 1.0
C) 0.333
D) 0.707

Question

-What is the sine of the phase angle in the circuit in Figure ?
A) 0.57 
B) 1.0 
C) 0.333 
D) 0.707

Quizplus · Accepted Answer

The sine of the phase angle in an electrical circuit, particularly in AC circuits, is determined by the ratio of the reactive component (capacitive or inductive) to the impedance of the circuit. The value of 0.707 is specifically associated with a phase angle of 45 degrees, where the reactive and resistive components are equal, leading to a sine value of sin(45°) = 0.707. This is a common scenario in circuits designed to have equal resistance and reactance, resulting in a phase angle where the sine is 0.707.

-What Is the Sine of the Phase Angle in the Circuit