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Mechanical Engineering - Production Engineering

Exercise : Production Engineering - Section 4
41.
The factor responsible for the formation of discontinuous chips is
low cutting speed and large rake angle
low cutting speed and small rake angle
high cutting speed and large rake angle
high cutting speed and small rake angle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is
3.75 m/min
5 m/min
7.5 m/min
15 m/min
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
The actual feed in centreless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and α = Angle of inclination of wheel)
πd
πd n
πd n sin α
πd n cos α
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
For fast removal of materials during grinding, a __________ grinding wheel is used.
coarse grained
fine grained
medium grained
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Which of the following process is used for preparing parts having large curved surfaces and thin sections?
Hot machining
Ultra-sonic machining
ECM process
Chemical milling
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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