Allied & ICAR Exam Bank • ALLIED_0841 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: Thermodynamic principles of I.C. engines

Question Statement:

In the heat balance sheet of a fully loaded agricultural tractor diesel engine, the typical distribution of fuel chemical energy is approximately:

Options:

  • (A) Brake work: $30-35\%$, Cooling water: $25-30\%$, Exhaust gas: $30-35\%$, Radiation & friction: $5-10\%$
  • (B) Brake work: $80\%$, Cooling: $10\%$, Exhaust: $10\%$
  • (C) Brake work: $10\%$, Cooling: $50\%$, Exhaust: $40\%$
  • (D) Brake work: $50\%$, Cooling: $50\%$

Answer Key:

A

Step-by-Step Solution & Explanation

Diesel engine thermal energy partitions roughly into one-third useful shaft work, one-third cooling loss, and one-third exhaust enthalpy.
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