The cutting fluid mostly used for machining alloy steels is

A. Water

B. Soluble oil

C. Dry

D. Sulphurised mineral oil

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  1. Crater wear is predominant in
  2. The vector sum of cutting velocity and chip velocity is __________ shear velocity.
  3. In plunge grinding
  4. In a plain milling cutter, the portion of the gash adjacent to the cutting edge on which the chip impinges…
  5. Which of the following statement is correct about hot machining?
  6. For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature…
  7. If the helix angle of the drill is made _________ 30°, then the torque required to drive the drill…
  8. If the cutting speed is increased, then the built-up-edge
  9. The shear velocity is the velocity of
  10. A 15 mm drilling machine means that it can drill a hole
  11. Which of the following statement is wrong about ultrasonic machining?
  12. In lapping operation, the amount of metal removed is
  13. Which of the following parameters influence the axial feed rate in centerless grinding?
  14. The chuck used for setting up of heavy and irregular shaped work should be
  15. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting…
  16. The helix angle of a drill is __________ for drilling brass.
  17. In machining metals, surface roughness is due to
  18. Crater wear leads to
  19. As the cutting speed increases, the tool cutting forces
  20. The drill spindles are provided with standard taper known as
  21. The operation of machining several surfaces of a workpiece simultaneously is called
  22. What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
  23. When the shear angle is small
  24. Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm…
  25. When the temperature of a solid metal increases,
  26. The point angle of a drill, for drilling stainless steel, is
  27. The crystal structure of austenite is
  28. A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to…
  29. The negative rake is usually provided on
  30. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then…