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Question Bank
1.Short notes,
Tenacity, Breaking extension %, Work of rupture, Elastic recovery%.
2.Describe stress and strain curve.
3.Explain CRL & CRE method.
4.Differentiate between CRL & CRE.
5. A yarn made of cotton has its
initial length 30 cm. An external load 20 N has been applied on it. Due to load
temporary creep is 5.3 cm and secondary creep is 4.7 cm. Calculate elastic
recovery%, plastic recovery% and breaking extension %.
6.A yarn made of cotton has its
initial length 20 cm. An external load 15 N has been applied on it. Due to load
elastic extension is 5.3 cm and plastic extension is 4.7 cm. Calculate elastic
recovery%.
7. A yarn made of cotton has its
initial length 40 cm. An external load 20 N has been applied on it. Due to load
elastic extension is 6 cm and plastic extension is 3 cm. Calculate Plastic
recovery%.
8.A yarn made of cotton has its
initial length 20 cm. An external load 10 N has been applied on it. Due to load
elastic extension is 3 cm and plastic extension is 2 cm. Calculate breaking
extension%.
Last modified: Monday, 4 January 2021, 11:49 PM