ISRO Mechanical & Aerospace 2017 - Question 32

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Topic: Thermodynamics

Efficiency of gas turbines lies between

  • A. 85 to 95%
  • B. 50 to 60%
  • C. 30 to 50%
  • D. 15 to 18%

Answer: D. 15 to 18%

Explanation: Practical gas turbines, especially older or simple cycle designs, have a relatively low thermal efficiency, typically in the range of 15% to 25%.

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