Question Bank • QB_SUB_FP_SEL_003 MCQ • 1 Mark

Section 3: Farm Power

Tractors and Power Tillers

Subtopic: Type, selection, maintenance and repair of tractors and power tillers

Question Statement:

The primary reason power tillers use single-cylinder water-cooled diesel engines with evaporative hopper cooling is:

Options:

  • (A) Simplicity, low manufacturing cost, and self-contained operation without water pumps
  • (B) High supersonic exhaust velocity
  • (C) Zero need for cylinder lubrication
  • (D) Ability to run without combustion air

Answer Key:

A

Step-by-Step Solution & Explanation

Hopper evaporative cooling operates by natural boiling and evaporation of water surrounding the cylinder jacket, eliminating radiators, water pumps, and thermostats.
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