If β is 0.3 for a circular wave guide operating in TM12 mode with P21=5.315, with the radius of the circular waveguide being equal to 25 mm, then the intrinsic impedance of the wave is:

If β is 0.3 for a circular wave guide operating in TM12 mode with P2

1.	If β is 0.3 for a circular wave guide operating in TM12 mode with P21=5.315, with the radius of the circular waveguide being equal to 25 mm, then the intrinsic impedance of the wave is:
A.	0.55 Ω
B.	0.4 Ω
C.	0.3 Ω
D.	1.2 Ω
Answer» B. 0.4 Ω

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If β is 0.3 for a circular wave guide operating in TM12 mode with P21=5.315, with the radius of the circular waveguide being equal to 25 mm, then the intrinsic impedance of the wave is:

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