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Q3. A shaft consists of a bronze sleeve 390 mm outside diameter shrunk onto a solid steel shaft of 340 mm diameter. The shaft is to transmit a power of 4.8 MW at a speed of 120 rev/min.

Calculate EACH of the following:

(a) The torque transmitted by the bronze sleeve;

(b) The percentage of the total power which is transmitted by the steel.

Note: Modulus of Rigidity for Bronze = 40 GN/m²

Modulus of Rigidity for Steel = 80 GN/m².