In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰⁰³⁰, the maximum interference (in microns) in the assembly is

A. 40

B. 30

C. 20

D. 10

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  1. The main purpose of a boring operation, as compared to drilling, is to
  2. In grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
  3. The method of grinding used to produce a straight or tapered surface on a workpiece, is
  4. Twist drills are made of
  5. A twist drill is specified by its
  6. A fine grained grinding wheel is used to grind
  7. Cast iron during machining produces
  8. Any number of equal divisions can be obtained on milling machine by
  9. The material property which depends only on the basic crystal structure is
  10. In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent…
  11. For fast removal of materials during grinding, a _________ grinding wheel is used.
  12. A dynamometer is a device used for the measurement of
  13. In ultrasonic machining, the metal is removed by
  14. A ring gauge is used to measure
  15. In a centre lathe, the cutting tool is fed in _________ with reference to the lathe axis.
  16. In a shaper, the metal is removed during
  17. The negative rake is usually provided on
  18. In a plain milling machine, the table can be moved
  19. The grinding operation is a
  20. The angle made by the face of the tool and the plane parallel to the base of cutting tool is called
  21. Which of the following statement is correct as regard to up milling?
  22. In machining metal, cutting force at the cutting edge is measured by a
  23. The cutting fluid mostly used for machining alloy steels is
  24. The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average…
  25. The effect of setting a boring tool above centre height leads to
  26. In up milling, the thickness of chip is
  27. The snag grinding is done
  28. The surface finish is improved by the increase in
  29. The factor which affects the tool life is
  30. The soft grade grinding wheels are denoted by the letters