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Morse standard taper is available in numbers from:

  • A.1 to 7
  • B.1 to 8
  • C.0 to 7
  • D.0 to 8

Answer: C

Morse standard tapers run from 0 to 7.

The Morse taper series has eight sizes, numbered MT0 (the smallest) to MT7 (the largest). They are used on drill shanks, lathe centres, tailstock and drilling machine spindles, and sleeves let a smaller taper fit a larger socket.

Numbering from 1 leaves out MT0, and there is no MT8 in the standard series, so 1 to 7, 1 to 8 and 0 to 8 are all wrong.

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