Question

A grinding wheel of 150 mm diameter is rotating at 3000 rpm. The grinding speed is
1. 7.5 π m/sec
2. 15 π m/sec
3. 45 π m/sec
4. 450 π m/sec

Answer 1

Correct Answer - Option 1 : 7.5 π m/sec
\(V = \frac{{\pi dN}}{{60}} = \frac{{\pi \times 0.15 \times 3000}}{{60}} = 7.5\pi \frac{m}{{sec}}\)