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Q. |
In a gearing system, pump speed is one third of the motor. Shaft from motor is 6 cm in diameter and 30cm long, the impellar shaft is 10cm diameter and 60cm long. Mass moment of inertia is 1500 Kgm2, C = 80Gn/m2. Neglecting the inertia of shaft and gears calculate the frequency of free torsional vibrations in Hz. |
A. | 4.7 |
B. | 5.7 |
C. | 4.5 |
D. | 5.5 |
Answer» A. 4.7 |
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