3rdSem -Mod 5 : Selection, Mounting and Balancing grd wheel_2

Why coolant is used while precision grinding?

• To increase the heat
• To minimise the heat and wash away the grain particles
• To increase the speed
• To decrease the speed

Which type of grinding wheel is required better cooling?

• Dense structured wheel
• Medium structured wheel
• Open structured wheel
• Normal structured wheel

Which grade of grinding wheel is used for light grinding machines?

• Soft grade
• Hard grade
• Medium grade
• Normal grade

Which grade of grinding wheel is used for rigid and new machines?

• Hard grade
• Medium grade
• Soft grade
• Normal grade

What is the wheel speed selected for hard wheel while grinding?

• High speed
• Medium speed
• Slow speed
• Normal speed

How the grinding wheels are checked for cracks before mounting?

• By light hammering
• By light tapping
• By seeing
• By light pressing

Why flanges are recessed for mounting the grinding wheel?

• To provide annular bearing at their circumference
• To provide force at their circumference
• To provide support at their circumference
• To provide pressure at their circumference

How to fit the grinding wheel on wheel spindle?

• Clearance fit
• Tight fit
• Transition fit
• Free fit

What is meant by dressing?

• Sharpening
• Shaping
• Finishing
• Turning

What is the name of operation if worn-out cutting edges are removed and create new cutting edges?

• Truing
• Dressing
• Glazing
• Loading