Question 2
[18]
In the double reduction gear train configuration illustrated in Figure 2, which incorporates an idler gear, the input shaft rotates at 1750 rpm in a clockwise direction.
2.1 Determine the output speed of the gear train.
(10)
2.2 Calculate the overall gear ratio of the system using the number of teeth on each gear in the double reduction gear train, including the idler gear.
2.3 Evaluate the efficiency of the gear train, considering mechanical losses of 5\% per gear mesh due to friction and backlash.
2.4 Discuss the role and mechanical significance of the idler gear in the context of power transmission, particularly its influence on the direction of rotation and torque transmission within the gear train.
(2)
Figure 2: Double reduction gear with idler.