Heavy Duty Truck Systems – Chapter 15 – Lecture Summary & Practice Questions
Which of the following statements is/are correct about geartrains? - correct answer ✔✔all the
above
Which of the following gear ratios indicates the most amount of overdrive? - correct answer
✔✔0.64:1
Which type of gear is more likely to develop gear whine at higher speeds? - correct answer
✔✔spur gear
When an idler gear is placed between the driving and driven gear, the driven gear: - correct
answer ✔✔rotates in the same direction as the driving gear
When sliding gearshift mechanisms are used, which gears do they control? - correct answer
✔✔all the above
Which type of transmission requires double-clutching between shifts? - correct answer
✔✔nonsynchronized
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: - correct answer ✔✔synchronizer
Which of the following is the most widely used standard transmission geartrain arrange-ment in
heavy-duty trucks? - correct answer ✔✔twin countershaft
Which of the following is true of a twin-countershaft standard transmission? - correct answer
✔✔all the above
Which of the following statements is/are correct about geartrains? - correct answer ✔✔all the
above
Which of the following gear ratios indicates the most amount of overdrive? - correct answer
✔✔0.64:1
Which type of gear is more likely to develop gear whine at higher speeds? - correct answer
✔✔spur gear
When an idler gear is placed between the driving and driven gear, the driven gear: - correct
answer ✔✔rotates in the same direction as the driving gear
When sliding gearshift mechanisms are used, which gears do they control? - correct answer
✔✔all the above
Which type of transmission requires double-clutching between shifts? - correct answer
✔✔nonsynchronized
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: - correct answer ✔✔synchronizer
Which of the following is the most widely used standard transmission geartrain arrange-ment in
heavy-duty trucks? - correct answer ✔✔twin countershaft
Which of the following is true of a twin-countershaft standard transmission? - correct answer
✔✔all the above
