Page 150 - WCS - Electrical

WORKSHOP CALCULATION & SCIENCE - CITS

Co- efficient of linear α=

= 2.1 x 10-6 / °C
2 The length of a metal rod is 100 cm at 300 C and 100.14 cm at 1000 C. Calculate the co-efficient of linear
expansion.
Initial length at 30°C = 100 cm
Final length at 100° C = 100.14 cm
Increased length = 0.14 cm
Increased temperature = 100 - 30 = 70°C

α=

Co- efficient of linear α=

= 2 x 10-5

137

CITS : WCS - Electrical - Exercise 12