3rdSem -Mod 5 : Selection, Mounting and Balancing grd wheel_1

What is the high peripheral speed of grinding wheel?

• 60 metres/sec
• 70 metres/sec
• 50 metres/sec
• 80 metres/sec

Where to be stored grinding wheels?

• Wet place
• Dry place
• Air conditioner room
• Extreme temperature

Which material thin washers are made for mounting the grinding wheel?

• Brass
• Copper
• Mild steel
• Blotting paper or rubber

What is the size of steel flanges in order to provide sufficient support and grip for mounting grinding wheel?

• One third of the wheel diameter
• Two third of the wheel diameter
• Half of the wheel diameter
• Same as wheel diameter

What is the shape of groove is provided in wheel mount with balance collet to fit adjustable and movable weights?

• Dovetail
• Round
• Square
• Elliptical

What is the name of balancing if the grinding wheel is centered on a horizontal arbor remains rest in any position?

• Static balancing
• Dynamic balancing
• Static centering
• Dynamic centering

What is the name of balancing if the grinding wheel rotating with neither vibration nor whip action?

• Static balancing
• Dynamic balancing
• Static centering
• Dynamic centering

What is the adverse effect of wheel due to out of balance?

• Loading of grinding wheel
• Glazing of grinding wheel
• Excessive wears on bearing
• Excessive wears on wheel spindle

When truing is necessary in grinding wheel?

• Before balancing
• After balancing
• To recondition the wheel
• To run the wheel in out of balance

Which is required for balancing grinding wheel?

• Machine spindle
• Balance collet
• Collet and mandrel
• Collet and arbor