For permissible shear stress fs, the torque transmitted by a thin tube of mean diameter D and wall thickness t, is

For permissible shear stress fs, the torque transmitted by a thin tube

1.	For permissible shear stress fs, the torque transmitted by a thin tube of mean diameter D and wall thickness t, is
A.	[A].
B.	[B].
C.	πD2t fs
D.	[D].
Answer» B. [B].

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For permissible shear stress fs, the torque transmitted by a thin tube of mean diameter D and wall thickness t, is

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