# While using high speed steel tools, the average cutting speed is highest for

1.  Mild steel

2.  Alloy steel

3.  Stainless steel

4.  Carbon steel

5.  (d) Carbon steel

5

Mild steel

Explanation :
No Explanation available for this question

# While using carbide tool for machining mild steel, the maximum material will be removed at a temperature of

1.  500 C

2.  750 C

3.  1000 C

4.  2750 C

4

2750 C

Explanation :
No Explanation available for this question

# Tool life is

1.  Time between tool sharpening

2.  Time for which the tool is in contact with the work piece

3.  Measure by the volume of material removed between tool sharpening

4.   All of these

4

All of these

Explanation :
No Explanation available for this question

# Tool life is affected by

1.  Depth of cut

2.  Cutting speed

3.  Chip thickness

4.   All of these

4

All of these

Explanation :
No Explanation available for this question

# The tool life is finished when

1.  Surface finish obtained is poor

2.  There is sudden increase in cutting forces and power consumption

3.  Overheating and fumes due to friction starts

4.  All of these

4

All of these

Explanation :
No Explanation available for this question

# The relationship between tool life (T) and cutting speed (V) m/min is given as

1.  VnT = C

2.  VTn = C

3.  Vn/T = C

4.  Tn/V = C

4

VTn = C

Explanation :
No Explanation available for this question

# A tool may fail due to

1.  Cracking at the cutting edge due thermal stresses

2.  Plastic deformation of the cutting edge

3.  Chipping of the cutting edge

4.  All of these

4

All of these

Explanation :
No Explanation available for this question

# In the relation for cutting tool life VTn = C, the numerical value of n for roughing cut as compared to that for light cuts in mild steel would be

1.  More

2.  Less

3.  Same

4.  Does not depend on type of cut

4

Does not depend on type of cut

Explanation :
No Explanation available for this question

# In the relation for cutting tool life VTn = C, the numerical value of n for high speed steel tools vary in the range

1.  0.1 to 0.15

2.  0.20 to 0.25

3.  0.25 to 0.40

4.   0.40 to 0.55

4

0.1 to 0.15

Explanation :
No Explanation available for this question

# Flank wear occurs mainly on the

1.  Nose part of the cutting tool

2.  Front relief face and side relief face of the cutting tool

3.  Face of cutting tool at a short distance from the cutting edge

4.  Both (a) and (b)

4