Machine Design Questions and Answers – Design of Chain Drive

This set of Machine Design aptitude tests focuses on “Design of Chain Drive”.

1. A gear meshes with another gear and a sprocket meshes with another sprocket.
a) True
b) False
View Answer

Answer: b
Explanation: A sprocket meshes with with an intermediate link which further meshes with another sprocket.

2. The number of links of the chain should be always ______
a) Odd
b) Even
c) Multiple of 3
d) None of the listed
View Answer

Answer: b
Explanation: The odd number of teeth are meshed with even number of links.

3. In chain drives, vertical drives are generally avoided.
a) True
b) False
View Answer

Answer: b
Explanation: Sag causes the chain to leave the profile of the teeth at lower side.
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4. Sum of number of links and number of teeth of the sprocket is _____
a) Odd
b) Even
c) Odd or Even
d) None of the listed
View Answer

Answer: a
Explanation: Number of links are even while number of teeth on the sprocket are odd.

5. The driving sprocket has 19 teeth and rotates at 1100rpm. The pitch of the chain is 18mm. Calculate the velocity of the chain.
a) 5.6m/s
b) 6.3m/s
c) 5.8m/s
d) 5.1m/s
View Answer

Answer: b
Explanation: v=zpn/60×1000.
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6. Calculate the pitch circle diameter of the driving pulley is pitch is given as 18mm and sprocket has 19 teeth.
a) 112.33mm
b) 109.36mm
c) 102.66mm
d) 105.33mm
View Answer

Answer: b
Explanation: D=p/sin(180/z).

7. Driving and driven pulleys are rotating at 1000rpm and 500rpm. If number of teeth on driving sprocket are 20, find number of teeth in the driven sprocket.
a) 41
b) 40
c) 10
d) 11
View Answer

Answer: b
Explanation: n₁z₁=n₂z₂.
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8. If centre distance for a chain drive is 750mm with number of teeth on the driving and driven sprockets being 40 and 20 respectively, then calculate the number of links required. Given: Pitch is taken as 19mm.
a) 112
b) 110
c) 111
d) 109
View Answer

Answer: b
Explanation: 2(a/p) + (z₁+z₂)/2 +( z₂- z₁/2π)²xp/a.

9. In silent chain sprocket teeth have a rectangular profile.
a) Yes rectangular
b) No trapezoidal
c) No circular
d) No hyperbolic
View Answer

Answer: b
Explanation: They have a trapezoidal profile.
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10. Roller chains have less reliability as compared to roller chains.
a) True
b) False
View Answer

Answer: b
Explanation: Silent chains have laminated structure and hence are more reliable.

Sanfoundry Global Education & Learning Series – Machine Design.
To practice all areas of Machine Design for aptitude tests, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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