51. Which of the following statement is wrong?
52. The parts of circular cross-section which are symmetrical about the axis of rotation are made by
53. The recrystallisation temperature of steel is
54. The teeth of hacksaw blade are bent
55. The operation of bending a sheet of metal along a curved axis, is known as
56. In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
57. The electron beam welding can be carried out in
58. Structural sections such as rails, angles, I-beams are made by
59. A hacksaw blade cuts on the
60. V-block is used to
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