एक ऊष्मा इंजन 1500 kJ/मिनट की दर पर ऊष्मा प्राप्त करता है और 8.2 kW का आउटपुट प्रदान करता है, तो तापीय दक्षता क्या है?

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NPCIL SA/ST ME GJ held on 07/11/2019 Shift-1
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  1. 47.20%
  2. 41%
  3. 32.80%
  4. 27.90%

Answer (Detailed Solution Below)

Option 3 : 32.80%
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संकल्पना:

ऊष्मा इंजन की तापीय दक्षता 

\({\eta _{thermal}} = \frac{{Power\;Output}}{{Heat\;Input}}\)

गणना:

दिया गया है:

ऊष्मा इनपुट = 1500 kJ/min = 25 kW, शक्ति आउटपुट = 8.2 kW

F1 Krupalu 2.12.20 Pallavi D8

\({\eta _{thermal}} = \frac{{8.2}}{{25}} = 0.328 = 32.8\;\% \)

 

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