Mechanical Engineering :: Workshop Technology
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The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
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The welding set up is said to have straight polarity, when
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The most preferred process for casting gas turbine blades is
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The upsetting is a process of
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If neutral flame is used in oxy-acetylene welding, both oxygen and acetylene cylinders of the same capacity will be emptied at the same time.
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Which of the following material can be used for making patterns ?
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A.
work is connected to the positive terminal and the electrode holder to the negative terminal
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B.
work is connected to the negative terminal and the electrode holder to the positive terminal
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C.
work is connected to the positive terminal and the electrode holder is earthed
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D.
work is connected to the negative terminal and the electrode holder is earthed
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