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Grinding wheels should be tested for balance

A. Only at the time of manufacture

B. Before starting the grinding operation

C. At the end of grinding operation

D. Occasionally

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  1. Which of the following statement is wrong about ultrasonic machining?
  2. The tool may fail due to
  3. The type of tool used on milling machine and broaching machine is
  4. The negative rake is usually provided on
  5. Misrun is a casting defect which occurs due to
  6. A feed gear box for a screw cutting lathe is designed on the basis of
  7. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
  8. In drilling operation, the metal is removed by
  9. The carbide tools operating at very low cutting speeds (below 30 m/min)
  10. What is the method of brazing used to join relatively small assemblies made from materials that either…
  11. As the cutting speed increases, the tool cutting forces
  12. The hardness of a grinding wheel is specified by
  13. In a centre lathe, the cutting tool is fed in _________ with reference to the lathe axis.
  14. The percentage of carbon in gray cast iron is in the range of
  15. Hard and tough materials like cast iron should be turned at
  16. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
  17. The operation of making a cone-shaped enlargement of the end of a hole is known as
  18. The average cutting speed for turning brass with a high speed steel tool is
  19. The cutting fluid mostly used for machining alloy steels is
  20. A ring gauge is used to measure
  21. Which of the following statement is incorrect with reference of lathe cutting tools?
  22. Trepanning is performed for
  23. In lapping operation, the amount of metal removed is
  24. When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and…
  25. The ratio between two consecutive spindle speeds for a six-speed drilling machine using drills of diameter…
  26. The operation of machining several surfaces of a workpiece simultaneously is called
  27. What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
  28. Larger end cutting edge angle _________ tool life.
  29. The in-feed grinding is used to
  30. Lathe bed is made of