πŸ“Š Heat Engines
Q. In spark ignition engines, the knocking tendency is reduced by
  • (A) Reduction of compression ratio
  • (B) Advancing ignition timing
  • (C) Increasing exhaust temperature
  • (D) Adding dope like tetra ethy lead to the fuel
πŸ’¬ Discuss
βœ… Correct Answer: (D) Adding dope like tetra ethy lead to the fuel

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