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  • Question
  • When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.


  • Options
  • A. horizontal core
  • B. vertical core
  • C. drop core
  • D. balanced core

  • Correct Answer
  • drop core 


  • Workshop Technology problems


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    • 1. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 2. In a hot chamber die casting machine

    • Options
    • A. ferrous alloys with low melting temperature are casted
    • B. ferrous alloys with high melting temperature are casted
    • C. non-ferrous alloys with low melting temperature are casted
    • D. non-ferrous alloys with high melting temperature are casted
    • Discuss
    • 3. In welding copper alloys with TIG arc welding

    • Options
    • A. direct current with straight polarity is used
    • B. direct current with reversed polarity is used
    • C. alternating current is used
    • D. any one of these
    • Discuss
    • 4. The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

    • Options
    • A. outside micrometer
    • B. inside micrometer
    • C. depth gauge micrometer
    • D. combination set
    • Discuss
    • 5. The algebraic difference between the minimum limit and the basic size is called

    • Options
    • A. actual deviation
    • B. upper deviation
    • C. lower deviation
    • D. fundamental deviation
    • Discuss
    • 6. The temperature at which the new grains are formed in the metal is called

    • Options
    • A. lower critical temperature
    • B. upper critical temperature
    • C. eutectic temperature
    • D. recrystallisation temperature
    • Discuss
    • 7. In submerged arc welding, an arc is produced between a

    • Options
    • A. carbon electrode and the work
    • B. metal electrode and the work
    • C. bare metal electrode and the work
    • D. two tungsten electrodes and the work
    • Discuss
    • 8. The chisel used for cutting key ways is

    • Options
    • A. flat chisel
    • B. cape chisel
    • C. round nose chisel
    • D. diamond pointed chisel
    • Discuss
    • 9. When a pattern is made in three parts, the bottom part is known as a cope.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. In a centrifugal casting method, the impurities are collected in the centre of the casting.

    • Options
    • A. Yes
    • B. No
    • Discuss


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