25 AUGUST 2021 CURRENT AFFAIRS QUIZ

Both strength and ductility of the metal decreases

Strength of the metal increases but ductility decreases

Both strength and ductility of the metal increases

Strength of the metal decreases but ductility increases

Hardness of the work and tool material at the operating temperature

All of these

Degree of strain hardening in the chip

Amount and distribution of hard constituents in the work material

50°C

100°C

275°C

175°C

Chemical milling

ECM process

Hot machining

Ultrasonic machining

Surface grinding

Form grinding

External cylindrical grinding

Internal cylindrical grinding

Hardness of the material being ground

Nature of the grinding operation

All of these

Finish required

Hard constituents are present in the micro-structure of the tool material

Grain size of the metal is large

Grain size of the metal is small

None of the listed here

15 m/min

30 m/min

22 m/min

10 m/min

Any one of these

Left hand spiral fluted reamer

Straight fluted reamer

Right hand spiral fluted reamer

Has less number of teeth

Removes less material for each pass of the tool

All of the listed here

Is short and stocky