00:00numerical number three of unit 17 second law of thermodynamics is in a high-pressure steam turbine
00:13engine the steam is heated to 600 degree centigrade and exhausted at about 90 degree centigrade what
00:25is the highest possible efficiency of any engine that operates between these two temperatures so
00:35this question may have a temperatures you have obtained to have a fine car nahi we have to find
00:43efficiency of engine सबसे पहले हम डेटा बनाएंगे
00:50यहां पर जो highest temperature का value है वो T1 है so T1 is obtained as 600 degree centigrade
01:08इसको हम Kelvin में convert करेंगे जब हम इसको Kelvin में convert करेंगे तो इसके साथ
01:16273 add करवाएंगे so T1 will be obtained as 873 Kelvin and T2 is also given
01:32which which is 90 degree centigrade इसको भी हम Kelvin में convert करेंगे so 90 plus 273 so T2 will be equal to
01:51363 Kelvin so we have to find efficiency means Eta for solution
02:06or calculation
02:10here we will use the formula of efficiency in terms of temperature
02:18so Eta will be equal to
02:211 minus T2 upon T1
02:26into 100 percent
02:30so efficiency will be equal to 1 minus T2 as T2 is
02:36363 divided by T1 which is
02:44873 Kelvin multiplied with 100 percent
02:51so efficiency will be equal to
02:55when we will multiply 100 with 0.5842 then we will get 58.4
03:25to 2 percent
03:29so this is our
03:33final
03:35answer
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