Question

A metal shaft of solid circular section rotates at 160 rpm and is subjected to a torque of 1500 Nm. What is the power, in kW, transmitted by the shaft?

• A. $32\pi$
• B. $16\pi$
• C. $12\pi$
• D. $8\pi$

Answer 1

The correct option is D $8\pi$

$\because P=T\omega$

$=T\times \frac{2\pi N}{60}$

$=1500\times 160\times \frac{2\pi }{60}\times {10}^{-3}kW$

$=8\pi kW$