Jharkhand JET study materials
Jharkhand JET study resources

Jharkhand JET: Voc. / I.T.I. to Dip. E.C.E. - Vocational/ITI to Diploma Entrance Competitive Examination

Jharkhand JET · Work through your exam, one topic at a time.

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Voc. / I.T.I. to Dip. E.C.E. - Vocational/ITI to Diploma Entrance Competitive Examination

Voc./I.T.I. to Dip. E.C.E. (Vocational/ITI to Diploma Entrance Competitive Examination) is the lateral-entry test for vocational or ITI certificate holders who want direct admission to the diploma programme. It tests basic mathematics, science and trade/vocational theory.

Core rules

  • Mathematics: workshop calculation, percentage, ratio, mensuration and simple trigonometry.
  • Science: units, force, energy, electricity and materials.
  • Trade theory: tools, machines, processes and safety for the candidate’s trade.
  • Engineering drawing: lines, projections, symbols and reading dimensions.
  • In workshop calculation, keep units consistent before substituting into a formula.

Worked example

On a lathe, a 50 mm diameter workpiece rotates at 400 rpm. Find the cutting speed in m/min. Reasoning: V = πDN/1000, where D is in mm and N in rpm. V = (3.14 × 50 × 400)/1000 = 62.8 m/min. The divisor 1000 converts millimetres to metres; omitting it gives 62,800, which is absurd for a lathe.

Traps

  • Forgetting the 1000 conversion in cutting-speed formulas.
  • Confusing feed per revolution with depth of cut.
  • Using first-angle projection symbols as third-angle.
  • Answering from general trade memory when the question gives a specific material.
  • Mixing diameter and radius in rotational calculations.