1
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
In a machining operation chip thickness ratio is $$0.3$$ and the back rake angle of the tool is $${10^ \circ }.$$ What is the value of the shear strain?
A
$$0.31$$
B
$$0.13$$
C
$$3.00$$
D
$$3.34$$
2
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
Consider the following statements
During the third stage of tool-wear, rapid deterioration of tool edge takes place because
$$1.$$ Flank wear is only marginal.
$$2.$$ Flank wear is large.
$$3.$$ Temperature of the tool increases gradually.
$$4.$$ Temperature of the tool increases drastically.

Which of the statements given above are correct?

A
$$1$$ & $$3$$
B
$$2$$ & $$4$$
C
$$1$$ & $$4$$
D
$$2$$ & $$3$$
3
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
Match List - $${\rm I}$$ with List - $${\rm I}$$$${\rm I}$$ and select the correct answer using the codes given below: GATE PI 2005 Machine Tools and Machining - Metal Cutting Question 55 English
A
$$A - 1,\,\,B - 4,\,\,C - 2,\,\,D - 5$$
B
$$A - 4,\,\,B - 1,\,\,C - 3,\,\,D - 2$$
C
$$A - 4,\,\,B - 1,\,\,C - 2,\,\,D - 3$$
D
$$A - 1,\,\,B - 4,\,\,C - 3,\,\,D - 5$$
4
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
Consider the following statements
$$1.$$ $$\,\,\,\,\,\,\,\,\,\,\,\,$$ As the cutting speed increases, the cost of production initially reduces, then
$$\,\,\,\,\,\,\,\,\,\,\,\,$$after an optimum cutting speed it increases.
$$2.$$ $$\,\,\,\,\,\,\,\,\,\,\,\,$$ As the cutting speed increases the cost of production also increases and
$$\,\,\,\,\,\,\,\,\,\,\,\,$$after a critical value to it reduces.
$$3.$$ $$\,\,\,\,\,\,\,\,\,\,\,\,$$ Higher feed rate for the same cutting speed reduces cost of production.
$$4.$$ $$\,\,\,\,\,\,\,\,\,\,\,\,$$ Higher feed rate for the same cutting speed increases the cost of production

Which of the statements given above are correct?

A
$$1$$ and $$3$$
B
$$2$$ and $$3$$
C
$$1$$ and $$4$$
D
$$3$$ only
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