Allied & ICAR Exam Bank • ALLIED_0863 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: I.C. engine cycles

Question Statement:

In a Dual combustion (Sabathe) cycle, heat addition occurs:

Options:

  • (A) Partly at constant volume and partly at constant pressure
  • (B) Entirely at constant volume
  • (C) Entirely at constant pressure
  • (D) Entirely at constant temperature

Answer Key:

A

Step-by-Step Solution & Explanation

The Dual cycle combines an initial constant-volume pressure spike followed by constant-pressure burning, closely approximating high-speed diesel combustion.
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