MCQ/QA

The rise in temperature due to flow of chip against friction on the tool rake face

• Primary deformation zone

• Secondary deformation zone

• Tertiary deformation zone

• All the mentioned points

Usually no cutting fluid is used in________ process

• Shaping

• Broaching

• Thread rolling

• Honing

Cutting fluids are used to__________

• cool the tool and workpiece

• cool the machine

• form as protective layer to workpiece

• form as protective layer to workpiece

The cutting fluid mostly used for machining is_______

• soluble oil

• water

• Dry

• heavier oil

The carbide tools operating at very low cutting speeds (below 30 m/min)

• Reduces tool life

• Increases tool life

• Have no effect on tool life

• Spoils the work piece

The best example of semi solid lubricant is

• Grease

• Graphite

• Castor oil

• Hard oil

Which one of the following is the reason that tap water is not preferred as coolant on machine too ?

• Danger of corrosion

• It decreases cutting action of the tool

• It has insufficient cooling effect

• Due to high cooling effect the cutting edges of the tool break off

Which one of the following is known for machining without any coolant

• Dry machining

• Wet machining

• Mist machining

• Semi-solid machining

______ are used to separate the tramp oil (sump oil) from coolant

• Skimmers

• Magnetic separators

• Rotating spindles

• All of the above

Why metal removal process is costly?

• both more energy is required and some of the material is wasted

• more energy is required

• some of the material is wasted

• none of the mentioned