This set of Machine Design Multiple Choice Questions & Answers (MCQs) focuses on “Belt Tensioning Methods”.
1. Is it possible to remove the slack from the belt?
a) Yes
b) No
c) It can be done but at the cost of strength
d) None of the listed
View Answer
Explanation: A short length of belt is cut to remove slack provided it is not an endless belt.
2. A ribbed V belt is a negative drive.
a) Yes
b) No, it’s a positive drive
c) Zero drive
d) None of the listed
View Answer
Explanation: It is a positive drive.
3. The cross section of V belt consist of rubber backing to help engagement of teeth with sprocket.
a) Yes
b) No, it is used for protection
c) There is no rubber packing
d) None of the listed
View Answer
Explanation: It is used for protecting the load carrying tension members.
4. Ribbed V belt is not generally recommended as the output speed keeps fluctuating.
a) True
b) No, it is generally recommended
c) No variation in output speeds
d) None of the listed
View Answer
Explanation: There is no variation in output speed in case of ribbed V belts.
5. The ribbed V belts don’t require any type of lubrication like V belts.
a) True
b) Intense lubrication is required
c) No belts require any lubrication
d) Ribbed V belts can be operated with or without lubrication
View Answer
Explanation: Ribbed V belts are free from lubrication problem.
6. Ribbed V belts are very stable and can tolerate some misalignment without any malfunctioning.
a) True
b) False
View Answer
Explanation: Ribbed V belts are very sensitive.
7. Toothed belt is preferred over ribbed V belt.
a) Yes
b) No
c) They both imply to same thing
d) None of the listed
View Answer
Explanation: Toothed belt and ribbed V belt is same thing.
8. The idler pulley increases the power transmitting capacity of the belt drive.
a) True
b) False
View Answer
Explanation: Idler pulley increases the arc of contact which further increases the power transmitting capacity.
9. Adjusting screw can be used for adjusting belt tension?
a) Yes
b) No
c) Distance can never be changed
d) None of the listed
View Answer
Explanation: Adjusting screw varies the distance between electric motor and bedplate.
Sanfoundry Global Education & Learning Series – Machine Design.
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