Chapter Tests
and Problems
19. List at least four of the items that must be determined when
designing roller chain drives.
20. If a small sprocket has 12 teeth and travels at 1600 rpm and
the large sprocket travels at 400 rpm, how many teeth does
the large sprocket have?
21. What is the center distance between shafts in chain pitches
if the center distance measures 16 in. and a No. 25 chain is
used?
22. Why is correct lubrication of chain drives important?
23. Identify at least three methods of lubricating chain drives.
24. When establishing chain length in chain pitches, why is it
recommended that the chain length in chain pitches be
rounded up to an even number of chain pitches?
ChaPTer 17 BelT and Chain
drives ProB
ChaPTer 17 BelT and Chain
drives TesT
INSTRUCTIONS
Answer the following questions with short, complete statements
or drawings as needed on an A-size drawing sheet.
QUESTIONS
1. List at least five advantages of gear drives.
2. List at least five advantages of belt drives.
3. What would be three disadvantages of belt drives?
4. List at least five advantages of chain drives.
5. Most V-belts function most effectively at what speed and
temperature?
6. Are the terms pully and sheave used interchangeably?
7. Define pitch line.
8. What is the function of an idler in belt drive design?
9. Name the three main categories of V-belts.
10. Why are adjustable motor bases used in belt drives?
11. Describe the typical use for flat belts.
12. Describe positive drive belts.
13. List at least five factors that are involved in the selection of
a correct belt drive.
14. What is the ratio of the driver pulley to the driven pulley if
the driver operates at 2400 rpm and the driver operates at
600 rpm?
15. What is the belt velocity for the driver described in Question
14 if the pitch diameter is 4.5 in.?
16. What is the most commonly used power chain in industry?
17. Define sprocket.
18. The preferred position of chain drive shafts is in a horizontal
line or on a line inclined not more than how many
degrees?
59728_ch17_EOC_ptg01.indd 1 03/02/16 10:34 am
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Chapter 17
Belt and Chain Drives
Answers to End-of-Chapter Test Questions
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