III SEM - PRODUCTION TECHNOLOGY

Formula for cutting speed V=                       .

• ПDN/1000<br />m/min
• ПD2N/1000<br />m/min
• ПDN2/1000<br />m/min
• П2DN/1000<br />m/min

unit of cutting speed is                                

• m²/min
• m/h
• mm/sec
• m/min

profile griding in a profile grinder is usally done by                      

• hand grinding
• dry grinding
• wet grinding
• none

In standard marking system of grinding wheel, 23-A52K10S25 'K'<br />denotes

• Abrasive
• Grade
• Grain Size
• Bond Type

The amount of bond present between individual abrasive grain is indicated by                          

• Grade
• Structure
• Grain
• None

Which of the following is an artificial abrasive?

• Sand stone
• Emery
• Al2O3
• Diamond

For high speed grinding operations, which type of grinding wheels<br />are suggested?

• Vitrified<br />bond
• Shellac bond
• Rubber bond
• Resionoid bond

If the cutting edges become glass like appearance it is called as

• Truing
• Dressing
• Loading
• Glazing

Star dresser is commonly used for                      grain abrasive

• Rough grain
• coarse grain
• fine grain
• very grain

machining time in surface grinding is calculated by the<br />formula                    

• lpk/s n
• πdn/1000
• 1000 V/πd
• ls Tmax