50
Chapter 15
End of Chapter Review Questions Answer Key
1. Which of the following statements is/are correct about geartrains?
2. Which of the following gear ratios indicates the most amount of overdrive?
3. Which type of gear is more likely to develop gear whine at higher speeds?
4. When an idler gear is placed between the driving and driven gear, the driven gear:
5. When sliding gearshift mechanisms are used, which gears do they control?
6. Which type of transmission requires double-clutching between shifts?
7. The component used to ensure that the main shaft and the main shaft gear about to be
locked to it are rotating at the same speed is known as a:
8. Which of the following is the most widely used standard transmission geartrain
arrangement in heavy-duty trucks?
51
9. Which of the following is true of a twin-countershaft standard transmission?
10. In a range shift air control system, which component distributes inlet air pressure to
both the low- and high-range air hoses running to the range cylinder?
11. To provide for overdrive gearing in the high- and low-auxiliary transmission ranges,
which of the following components is added to the basic range-shift air control
system?
12. What component retains a shift rail in position following a shift?
13. An auxiliary mechanical drive for truck accessories driven by the transmission is
known as a(n):
14. Which of the following statements is true regarding the function of a transfer case?
15. Which of the following components in a typical heavy-duty, twin-countershaft
transmission could be described as floating?