Summary

• Description:

  The PDF document comprises KALA Joint Trials Power Mechanics Paper 1 2025 Mock Exam with Marking Scheme.

  It is a KCSE Power Mechanics Paper 1 (447/1) KALA Trial Examination (July 2025).

  • Duration: 2 hrs 30 min
  • Total Marks: 100
  • Number of Questions: 15 (Section A: Questions 1–10; Section B: Questions 11–15)
  • Marking Scheme: The marking scheme is in a different document.

  The paper consists of two sections. Candidates answer all questions in Section A, and in Section B answer Question 11 on A3 paper and any other three questions.

  It covers the following topics:

  • Introduction to Power Mechanics and basic workshop first aid (body cuts)
  • Tyres and wheel service (tubeless vs tubed tyres, tyre care practices, changing a flat tyre)
  • Entrepreneurship in automotive trade (reasons for writing a business plan)
  • Measurement and tolerances (limits from nominal size and tolerance)
  • Automotive electrical testing (functions of a multimeter and correct connection)
  • Fasteners and retaining devices (split pins and internal snap rings)
  • Materials and metallurgy (reasons for alloying metals)
  • Automotive charging systems (alternator vs DC generator)
  • Engines and combustion (external vs internal combustion engines; crankshaft-driven components; cylinder head gasket safety)
  • Transmission systems (parts of an automatic transmission; clutch drag vs clutch slip)
  • Welding and brazing basics (types of rods and fluxes)
  • Steering and suspension geometry (positive/negative castor angle; stabilizer bar operation)
  • Fuel system (carburettor parts identification and functions)
  • Engineering drawing (first angle orthographic projection from an isometric machined component; leading dimensions)
  • Vehicle systems and components (identification/operation of a motor vehicle component; dual master cylinder parts and operation under normal and failure conditions)
  • Workshop planning (provisions for designing a Power Mechanics workshop and sketching a standard workshop layout)
• File Size:

  1.33 MB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  POWER MECHANICS
• Posted By:

  Caleb_Peter

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