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  1. Silicon percentage in silicon steel used for electrical equipments is about
  2. Photographic plates are coated with
  3. Steel is welded using the __________ flame.
  4. __________ cannot increase the fatigue strength of a material.
  5. Spark plug is provided in a/an
  6. Pick out the wrong statement.
  7. Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is…
  8. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following…
  9. Production of a hollow product by inflation of a tube or parison is called the __________ process.
  10. Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________…
  11. The cathode in an electrochemical cell always carries
  12. Plastics as a material of construction suffer from the drawback of low
  13. High speed steel tools retain their hardness upto a temperature of __________ °C.
  14. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
  15. For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
  16. There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.
  17. Which one is neutral in character?
  18. Oxide layer formed on the non-ferrous metal surface after its annealing is
  19. Dies for wire drawing are generally made of
  20. Thermit welding uses the following energy source.
  21. Which of the following does not have a sharp melting point?
  22. In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just…
  23. Work done by a/an __________ process is determined by ∫p. dv
  24. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
  25. Steel balls are manufactured by
  26. Pick out the wrong statement.
  27. Electrostatic separation of minerals from each other is based on their differences in the following…
  28. A high pressure boiler generates steam at a pressure greater than __________ kg/cm2.
  29. Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.
  30. Highest cutting speed is achieved by the __________ tool material.