Allied & ICAR Exam Bank • ALLIED_0247 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: I.C. engine cycles

Question Statement:

In an air-standard Diesel cycle, the cut-off ratio $r_c$ is defined as the ratio of:

Options:

  • (A) Cylinder volume after combustion to cylinder volume before combustion (clearance volume)
  • (B) Total volume to stroke volume
  • (C) Clearance volume to stroke volume
  • (D) Bore to stroke

Answer Key:

A

Step-by-Step Solution & Explanation

Cut-off ratio $r_c = V_3 / V_2$ represents the ratio of cylinder volumes at end and beginning of constant-pressure combustion.
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