Generation of heat

High speed

Slow speed

Hard work piece

Grinding wheel

Table

Head stock

Table slide

To obtaine desired fit

Because it is not possible to manufacture a size exactly

To obtain higher accuracy

To have proper allowance

(a) Hard steel and nickel alloys

(b) Thin sheet metal

Both (A) and (B)

None of these

One tool bit on a bar

Two tool bits fitted on diametrically opposite sides of

Three tool bits equally spaced on a bar

Four or more tool bits