- #1
cseet
- 40
- 0
Hi all,
it's me again... sorry but this is the only place where I learn most of my physics from... pls kindly check my answer and for the last part... I found the angle but don't know how to convert it to (rad)... pls guide me...thanks
A series RCL circuit with L= 6.5 mH, C=3.7uF, and R = 5.5ohm is driven by a generator with a maximum emf of 197 V and a variable angular frequency w.
(a) Find the resonant frequency . (Unit: rad/s)
6.45E3 rad/s
(b) Find I(rms) at resonance when w=7.0E3 rad/s . (Unit: A)
25.3 A
(c) Find X(c) when w=7.0E3 rad/s. (Unit: ohm)
38.6 ohm
(d) Find X(L) when w=7.0E3 rad/s. (Unit: ohm)
45.5 ohm
(e) Find Z when w=7.0E3 rad/s. (Unit: ohm)
8.82 phm
(f) Find I(rms) when w=7.0E3 rad/s. (Unit: A)
15.8 A
(g) Find the phase angle when w=7.0E3 rad/s. (Unit: rad)
phase angle = inverse tan ((45.5-38.6) / 5.5) = 51.4
answer: I found the angle to be 51.4 degrees but how do I convert it to unit - rad?
thanks
cseet
it's me again... sorry but this is the only place where I learn most of my physics from... pls kindly check my answer and for the last part... I found the angle but don't know how to convert it to (rad)... pls guide me...thanks
A series RCL circuit with L= 6.5 mH, C=3.7uF, and R = 5.5ohm is driven by a generator with a maximum emf of 197 V and a variable angular frequency w.
(a) Find the resonant frequency . (Unit: rad/s)
6.45E3 rad/s
(b) Find I(rms) at resonance when w=7.0E3 rad/s . (Unit: A)
25.3 A
(c) Find X(c) when w=7.0E3 rad/s. (Unit: ohm)
38.6 ohm
(d) Find X(L) when w=7.0E3 rad/s. (Unit: ohm)
45.5 ohm
(e) Find Z when w=7.0E3 rad/s. (Unit: ohm)
8.82 phm
(f) Find I(rms) when w=7.0E3 rad/s. (Unit: A)
15.8 A
(g) Find the phase angle when w=7.0E3 rad/s. (Unit: rad)
phase angle = inverse tan ((45.5-38.6) / 5.5) = 51.4
answer: I found the angle to be 51.4 degrees but how do I convert it to unit - rad?
thanks
cseet