Question

The temperature of sink of heat engine is 27 degree c and its efficiency is 40 % what will be the temperature of source

Answer 1

Explanation:

★ EFFICIENCY ( E )

» SINK TEMPERATURE ( T² ) = 27°C = 300 K

» SOURCE TEMPERATURE ( T¹ ) = ???

» EFFICIENCY = 40 %

______________________________________

★ EFFICIENCY = [ 1 - T² / T¹ ] ★

» E = 1 - 300 / T¹

» 0.4 = 1 - 300 / T¹

» 0.4 = T¹ - 300 / T¹

» 0.4 T¹ = T¹ - 300

» 0.6 T¹ = 300

» T¹ = 300 / 0.6 = 500 K

★ TEMPERATURE OF SOURCE ( T¹ ) = 500 K ★