1. When the tool of centre lathe moves the angular of the axis of rotation ?

it produces a taper surface

it produces a cylindrical surface

it produces a flat surface

none of the above

Answer: it produces a taper surface

Explanation:


2. Tool life is affected due to ______ ?

size of the tool

size of the job

type of machine

cutting speed

Answer: cutting speed

Explanation:


3. Which among the following statement in respect to the lathe cutting tool is correct ?

red hardness temperature is higher for high carbon steel tool than that carbide tool

the property of tool chipping off with vibration is more cemented carbide tool than that of HSS tool

ceramic tool has more resistance to shock as compared to HSS tool

HSS can work at more spindle speed and feed than cemented carbide tool

Answer: the property of tool chipping off with vibration is more cemented carbide tool than that of HSS tool

Explanation:


4. A steel work piece of high tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for cutter ?

12°

20°

28°

Answer:

Explanation:


5. The lip angle of a single point tool is usually ______________ ?

20° to 40°

40° to 60°

60° to 80°

nota

Answer: 60° to 80°

Explanation:


6. Which one of the following tool angle is provided to avoid rubbing of the body of the tool with the workpiece ?

rake angle

helix angle

clearance angle

nota

Answer: clearance angle

Explanation: