81. The method of grinding used to produce internal cylindrical holes and tapers, is
82. Glazing in grinding wheels takes place when the
83. Grinding wheels should be tested for balance
84. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is
85. The tool life is affected by
86. The abrasive slurry used in ultrasonic machining contains fine particles of
87. Fixtures are used
88. Which of the following is the correct data structure for solid models?
89. The cutting fluid mostly used for machining alloy steels is
90. Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as
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