A gear box having surface area of 0.30 m has overall heat transfer coefficient of 23 W/m C,when a fan is mounted on worm shaft to circulate air on fins. What is the power transmitting capacity of a gear box based on thermal considerations, if temperature rise of lubricating oil is 50 C? (Assume = 6, = 22 & = 0.05)

A gear box having surface area of 0.30 m has overall heat transfer coe

1.	A gear box having surface area of 0.30 m has overall heat transfer coefficient of 23 W/m C,when a fan is mounted on worm shaft to circulate air on fins. What is the power transmitting capacity of a gear box based on thermal considerations, if temperature rise of lubricating oil is 50 C? (Assume = 6, = 22 & = 0.05)
A.	1.023 kW
B.	1.006 kW
C.	1.227 kW
D.	2.000 kW
Answer» C. 1.227 kW

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