Electrical Engineering - RL Circuits - Discussion

Discussion :: RL Circuits - General Questions (Q.No.15)

15. 

When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle

[A]. increases
[B]. decreases
[C]. is not affected
[D]. cannot be determined

Answer: Option A

Explanation:

No answer description available for this question.

Nihar Shah said: (Sep 21, 2013)  
COS(phaseangle) = R/Z.

V = IZ.

If V of inductor increases, Z increases so cos(phaseangle) decreases so phase angle increases.

B Sharathkumar said: (Jan 31, 2017)  
V of inductor directly proportional to the reactance of inductor when V across L greater than V across R. Xl is greater than R circuit in inductive in nature. So phase angle increases.

Alam Khan said: (Feb 4, 2017)  
It is explained by the phasor diagram.

Rajashekar Balya said: (Jan 5, 2018)  
Phase angle =tan'(Vc/Vr).

Raju said: (Apr 9, 2020)  
Vr<Vl.
IR<IXL.
R<Xl.
Cos φ= R/Z.

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