1. Friction

  • Advantages and disadvantages, Laws of friction, co-efficient of friction, angle of friction, simple problems related to friction
  • Lubrication
  • Co- efficient of friction, application and effects of friction in workshop practice


2. Centre of Gravity

  • Centre of gravity and its practical application


3. Area of cut out regular surfaces and area of irregular surfaces

  • Circle, segment and sector of circle
  • Related problems of area of cut out regular surfaces - circle, segment and sector of circle
  • Area of irregular surfaces and application related to shop problems


4. Algebra

  • Addition , subtraction, multiplication & division
  • Theory of indices, algebraic formula, related problems


5. Elasticity

  • Elastic, plastic materials, stress, strain and their units and young’s modulus
  • Ultimate stress and working stress


6. Heat Treatment

  • Heat treatment and advantages
  • Different heat treatment process – Hardening, tempering, annealing, normalising and case hardening


7. Profit and Loss

  • Simple problems on profit & loss
  • Simple and compound interest


8. Estimation and Costing

  • Simple estimation of the requirement of material etc., as applicable to the trade
  • Problems on estimation and costing