ISRO Mechanical & Aerospace 2018 - Question 5

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Topic: IC Engines

The compression ratio for diesel engines is close to

  • A. 3 to 6
  • B. 5 to 8
  • C. 15 to 20
  • D. 20 to 30

Answer: C. 15 to 20

Explanation: For diesel engine compression ratio rc = 15-22. For Otto engine rc = 7-12. For Dual cycle engine rc = 13-17.

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