A hollow shaft (d0 = 2di where d0 and di are the outer and inner diameters respectively) needs to transmit 20 kW power at 3000 RPM. If the maximum permissible shear stress is 30 MPa, d0 is

A hollow shaft (d0 = 2di where d0 and di are the outer and inner diame

1.	A hollow shaft (d₀ = 2d_i where d₀ and d_i are the outer and inner diameters respectively) needs to transmit 20 kW power at 3000 RPM. If the maximum permissible shear stress is 30 MPa, d₀ is
A.	11.29 mm
B.	22.58 mm
C.	33.87 mm
D.	45.16 mm
Answer» C. 33.87 mm

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A hollow shaft (d0 = 2di where d0 and di are the outer and inner diameters respectively) needs to transmit 20 kW power at 3000 RPM. If the maximum permissible shear stress is 30 MPa, d0 is

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A hollow shaft (d₀ = 2d_i where d₀ and d_i are the outer and inner diameters respectively) needs to transmit 20 kW power at 3000 RPM. If the maximum permissible shear stress is 30 MPa, d₀ is