526. How many degrees of the movement is produced by one complete turn of the index crank
A.36°
B.90°
C.45°
D.9°

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527. Crater wear takes place in a single point cutting tool at
A.Flank
B.Side rake
C.Face
D.Tip

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528. Best coolant and lubricant for cast iron is
A.Water soluble oils or sulphur based and mineral oils
B.Mineral and fatty oils
C.Soluble oils
D.Dry

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529. Which of the following tool materials has highest cutting speed
A.Carbon steel
B.Carbide
C.HSS
D.Cast alloy

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530. 18-4-1 high speed steel contains following elements in the ratio of 18-4-1
A.Tungsten (W), chromium (Cr), and vanadium (V)
B.Cr, V, W
C.W, Mn, Cr
D.W, V, Cr

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531. Approximate content of Vanadium in H.S.S. cutting tool material is
A.16%
B.4%
C.0.10%
D.1%

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532. Tungsten content in me High Speed Steel cutting tool material is
A.18%
B.4%
C.0.10%
D.6%

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