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.	nD²/2 tfs
B.	nD/2 tfs
C.	D² tfs
D.	nD²t²/4 fs
Answer» B. nD/2 tfs

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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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