71. Which type of motor is not used in axis or spindle drives of CNC machine tools?
72. In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done in all the positions i.e. flat position, vertical position or inclined position.
73. The maximum possible draft in cold rolling of sheet increases with the
74. Allowance in limits and fits refers to
75. The purpose of jigs and fixtures is to
76. Which of the following process is used for preparing parts having large curved surfaces and thin sections?
77. The work or surface speed for cylindrical grinding varies from
78. The operation of machining several surfaces of a workpiece simultaneously is called
79. Two plates of the same metal having equal thickness are to be butt welded with electric arc. When the plate thickness changes, welding is achieved by
80. Down milling is also called
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