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একটি কার্নো ইঞ্জিন
230
°
C
এবং
27
°
C
তাপমাত্রায় কাজ করছে। এর কর্মদক্ষতা কত?
30%
50%
40%
60%
ANSWER : 3
Descrption
<p style="margin-left:0px;"><strong>40%</strong>।</p><p style="margin-left:0px;">কার্নো ইঞ্জিনের কর্মদক্ষতা হল:</p><p>η = 1 - T_c/T_h </p><p style="margin-left:0px;">যেখানে,</p><ul><li>η হল কর্মদক্ষতা</li><li>T_c হল সিঙ্কের তাপমাত্রা</li><li>T_h হল উৎসের তাপমাত্রা</li></ul><p style="margin-left:0px;">এই ক্ষেত্রে,</p><p>T_c = 27°C = 300 K T_h = 230°C = 503 K </p><p style="margin-left:0px;">সুতরাং,</p><p>η = 1 - 300/503 </p><p>η = 40%</p>
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