Manufacturing Processes (3141908) MCQs

MCQs of Basic Machine Tools and Metal Cutting Principles

Showing 41 to 50 out of 100 Questions
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41.
For machining of carbide material which of the following tool will be preferred?
(a) large positive rake angle tools
(b) Large negative rake angle tools
(c) Zero rake angle tools
(d) Small point angle tools
Answer:

Option (b)

42.
What is the optimum value of positive rake angle in degrees for maximum tool life?
(a) 10
(b) 12
(c) 15
(d) 20
Answer:

Option (c)

43.
With an increase in rake angle of tool, tool life will
(a) Increase
(b) Decrease
(c) Remains constant
(d) First, increase then decrease
Answer:

Option (d)

44.
Which of the following will give maximum chip flow during machining?
(a) Hard material
(b) Ductile material
(c) Brittle material
(d) All of the mentioned
Answer:

Option (b)

45.
Negative back rake angle is given for machining of:
(a) Brittle and hard material
(b) Soft material
(c) Ductile material
(d) Soft and ductile material
Answer:

Option (a)

46.
Positive rake angle is given for machining of:
(a) Brittle material
(b) Ductile material
(c) Both hard and soft material
(d) None of the mentioned
Answer:

Option (b)

47.
Which of the following will give large friction during chip flow?
(a) Positive back rake angle tool
(b) Negative back rake angle tool
(c) Zero back rake angle tool
(d) Small lip angle tool
Answer:

Option (b)

48.
Which of the following will give a better chip flow?
(a) Positive back rake angle tool
(b) Negative back rake angle tool
(c) Zero back rake angle tool
(d) None of the mentioned
Answer:

Option (a)

49.
For large negative back rake angle, tool will be
(a) Weaker
(b) Stronger
(c) Smoother
(d) Harder
Answer:

Option (b)

50.
For large positive back rake angle, the tool will be
(a) Weaker
(b) Stronger
(c) Smoother
(d) Harder
Answer:

Option (a)

Showing 41 to 50 out of 100 Questions
2 3 4 5 6 7