The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

The circumferential and longitudinal strains in a cylindrical boiler

1.	The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be
A.	εc + 2εl
B.	2εc + εl
C.	εc + εl²
D.	εc² + εl
Answer» C. εc + εl²

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The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

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