Production Engineering

26

Broaching is applied for machining

A. internal and external surfaces
B. round or irregular shaped holes
C. external flat and contoured surfaces
D. all of these

27

In electro-discharge machining, the tool is connected to cathode.

A. Correct
B. Incorrect

28

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

29
The process of improving the cutting action of the grinding wheel is called
A. truing
B. dressing
C. facing
D. clearing

30

In electro-chemical machining, the gap between the tool and work is kept as

A. 0.1 mm
B. 0.25 mm
C. 0.4 mm
D. 0.75 mm