1
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
$$A - 1,\,\,B - 4,\,\,C - 3,\,\,D - 5$$
2
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
A $$\phi $$ $$40$$ $$mm$$ job is subjected to orthogonal turning by a $$ + {10^ \circ }$$ rake angle tool at $$500$$ $$rev/min.$$ By direct measurement during the cutting operation, the shear angle was found equal to $${25^ \circ }.$$

If the friction angle at the tool-chip interface is $${58^ \circ }$$ $$10'$$ and the cutting force components measured by a dynamometer are $$600$$ $$N$$ and $$200$$ $$N$$, the power loss due to friction (in $$kNm/min$$) is approximately

A
$$20$$
B
$$18$$
C
$$16$$
D
$$350$$
3
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider the following statements with respect to the relief angle of cutting tool:

$$1.$$ This affects the direction of chip flow.
$$2.$$ This reduces excessive friction between the tool and work piece
$$3.$$ This affects tool life
$$4.$$ This allows better access of coolant to the tool-work piece interface

Which of the statements given above are correct?

A
$$1$$ and $$2$$
B
$$2$$ and $$3$$
C
$$2$$ and $$4$$
D
$$3$$ and $$4$$
4
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
In which of the choices given below, the cutting tool materials are placed in the ascending order of permissible cutting speed for machining of steel?
A
$$K$$ Group Cemented Carbide-$$P$$ Group Cemented Carbide-Ceramic -Cubic Boron Nitride
B
Cubic Boron Nitride - $$K$$ Group Cemented Carbide - $$P$$ Group Cemented Carbide - Ceramic
C
$$P$$ Group Cemented Carbide - $$K$$ Group Cemented Carbide - Cubic Boron Nitride - Ceramic
D
Ceramic - Cubic Boron Nitride - $$K$$ Group Cemented Carbide - $$P$$ Group Cemented Carbide