Production Engineering

.Lathe bed is made of
A. mild steel
B. alloy steel
C. pig iron
D. chilled cast iron


The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

A. VnT = C
B. VTn = C
C. Vn/T = C
D. V/Tn = C


Tumbler gears in lathe are used to

A. reduce the spindle speed
B. cut gears
C. give desired direction of movement to the lathe carriage
D. drill a workpiece

  A numerical method of identification of tool is known as tool signature.
A. Correct
B. Incorrect


The point angle of a drill, for drilling stainless steel, is

A. `90^circ`
B. `118^circ`
C. `135^circ`
D. `150^circ`