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°
527. Crater wear takes place in a single point cutting tool at
A.Flank
B.Side rake
C.Face
D.Tip
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
529. Which of the following tool materials has highest cutting speed
A.Carbon steel
B.Carbide
C.HSS
D.Cast alloy
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
531. Approximate content of Vanadium in H.S.S. cutting tool material is
A.16%
B.4%
C.0.10%
D.1%
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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