For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of

For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is

A

5 m/min

B

10 m/ min

C

15 m/min

D

30 m/min

For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is

A

10 m/min

B

15 m/min

C

22 m/min

D

30 m/min

The average cutting speed for turning mild steel with a high speed steel tool is

A

15 to 19 m/min

B

25 to 31 m/min

C

60 to 90 m/min

D

90 to 120 m/min

The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.

A

Equal to

B

Less than

C

More than

D

None of these

The cutting speed is maximum while machining _________ with a high speed steel tool.

A

Cast iron

B

Mild steel

C

Brass

D

Aluminium

The allowable tensile stress in structural mild steel plates for steel tank is assumed as

A

95.0 MPa on net area

B

105.5 MPa on net area

C

105.5 MPa on gross area

D

150.0 MPa on gross area

Mild steel is a/an __________ steel.

A

Low carbon

B

Medium carbon

C

High carbon

D

High alloy

The operation of machining several surface of a workpiece simultaneously is called

A

profile milling

B

face milling

C

gang milling

D

none of these

The operation of machining several surfaces of a workpiece simultaneously is called

A

Profile milling

B

Gang milling

C

Saw milling

D

Helical milling

With the same tool life, the maximum material per minute is removed by

A

Increasing the cutting speed

B

Decreasing the cutting speed

C

Increasing the depth of cut

D

Increasing the feed rate

For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of

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