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Inductors

Q1:

What is the phase angle of a 24 Vac parallel RL circuit when R = 45 ohms and XL = 1100 ohms?

A 0.001 degrees

B 2.300 degrees

C 87.600 degrees

D 89.900 degrees

ANS:B - 2.300 degrees

Since, it is a parallel RL circuit the formula for getting the phase angle is:
Arctan(B/G).
Susceptance (B) = (1/1100).
Conductance (G) = (1/45),
Angle = arctan((1/1100)/(1/45)).
Angle = 2.342612006 degrees.



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