The GATE Grind

GATE 2023 AG – Question 16

Farm Power · Farm Power · 1 mark · Multiple choice

Diesel turbocharger effectiveness increases when

  1. Ambient temperature increases
  2. Compressor pressure ratio decreases
  3. Engine load increases
  4. Engine displacement decreases

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Show answer and explanation

Correct answer: (C) Engine load increases

Explanation

Increasing engine load generally raises exhaust mass/energy available to the turbine, allowing greater boost and stronger turbocharging effectiveness. At light loads the turbine has less driving energy. Thus the intended operational trend is **engine load increases, C**.

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