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Chapter:

11. Which of following will give maximum chip flow during machining?

Hard material Ductile material Brittle material All of the mentioned

Ductile material

Brittle material breaks very easily due to which y have maximum chip flow.

Hint Answer

12. For large positive back rake angle, tool will be

Weaker Stronger Smoother Harder

Weaker

With increase in positive back rake angle, lip angle decreases and tool tip become thin.

Hint Answer

13. Which of following material can be used for coating on tools?

HSS TiCN WC cBN

TiCN

TiCN can be used for coating of tool while, HSS, WC and cBN are tool materials. With increase in percentage of cobalt toughness increases.

Hint Answer

14. Angle between end cutting edge and axis of tool is known as:

Side rake angle Side relief angle End cutting edge angle Back rake angle

End cutting edge angle

End cutting angle is angle between end cutting edge and axis of tool.

Hint Answer

15. Wearing resistance of cutting tool must be

High Low Very low None of the mentioned

High

Cutting tool has high capability to resist wear. Wearing resistance of cutting tool must be high.

Hint Answer

16. Which of following is correct about crater wear?

Occurs more in soft tool Occurs more hard tool Occurs more in brittle tool None of the mentioned

Occurs more in soft tool

Crater wear occurs in soft tools because ir face gets eroded easily during flow of chips over face.

Hint Answer

17. What is maximum allowed value of VB in mm for carbide tool used with steel work piece for a cutting condition of feed>0.3mm/rev?

0.5 1 1.7 2

1.7

VB denotes width of wear land. Maximum 1.7mm width of wear land is allowed in flank wear.

Hint Answer

18. Which of following will give large friction during chip flow?

Positive back rake angle tool Negative back rake angle tool Zero back rake angle tool Small lip angle tool

Negative back rake angle tool

With negative back rake angle, lip angle increases and space for chip flow decreases due to which it offers large resistance to chip flow.

Hint Answer

19. What is optimum value of positive rake angle in degrees for maximum tool life?

10 12 15 20

15

At 15 degree chip removal rate and strength of tool are optimum and hence tool life will be maximum.

Hint Answer

20. Thermal conductivity of cutting tool must be

High Low Very low None of the mentioned

High

For faster removal of heat, cutting tool must have high rmal conductivity. Thermal conductivity of cutting tool must be high.

Hint Answer

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All Chapters

View all Chapter and number of question available From each chapter from Manufacturing-engineering-I

Crystallography and Defects in Solid

Crystallography and Defects in Solid

Mechanical Properties and Testing and Phase Diagram

Mechanical Properties and Testing and Phase Diagram

Ferrous Metal, Non-Ferrous Metal and Heat Treatment

Ferrous Metal, Non-Ferrous Metal and Heat Treatment

Magnetic Properties of Material, Electrical Properties of Materials, Plastics, Ceramics and Composites

Magnetic Properties of Material, Electrical Properties of Materials, Plastics, Ceramics and Composites

Metal Cutting

Cutting-Tool Materials and Cutting Fluids

Cutting-Tool Materials and Cutting Fluids

Lathe Machines, Shaping and Slotting

Lathe Machines, Shaping and Slotting

Milling, Drilling and Reaming

Milling, Drilling and Reaming

Grinding, Surface Finishing Operations and Unconventional Machining Processes

Grinding, Surface Finishing Operations and Unconventional Machining Processes

Metrology, Welding, Fusion-Welding Processes and Unconventional Welding Methods

Metrology, Welding, Fusion-Welding Processes and Unconventional Welding Methods

Powder Metallurgy, NC Part Programming and Metal Casting and Gating Systems

Powder Metallurgy, NC Part Programming and Metal Casting and Gating Systems

Forming, Metal Forming Processes and Heat Transfer

Forming, Metal Forming Processes and Heat Transfer

Jigs and Fixture, Applications and Gears

Jigs and Fixture, Applications and Gears

Topics

This Chapter consists of the following topics

Metal Cutting

Which of following will give maximum chip flow during machining?

For large positive back rake angle, tool will be

Which of following material can be used for coating on tools?

Angle between end cutting edge and axis of tool is known as:

Wearing resistance of cutting tool must be

Which of following is correct about crater wear?

What is maximum allowed value of VB in mm for carbide tool used with steel work piece for a cutting condition of feed>0.3mm/rev?

Which of following will give large friction during chip flow?

What is optimum value of positive rake angle in degrees for maximum tool life?

Thermal conductivity of cutting tool must be

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