1
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
Consider the following statements :

The magnitude of residual stresses in welding depends upon
$$1.$$ Metal melted / deposited
$$2.$$ Design of weldment
$$3.$$ Support and clamping of components
$$4.$$ Welding process used

Which of the statements given above are correct?

A
$$1,2$$ and $$4$$
B
$$1,2$$ and $$3$$
C
$$1$$ and $$3$$
D
$$2$$ and $$3$$
2
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
Consider the following statements:

The size of the heat affected zone (HAZ) will increase with
$$1.$$ increased starting temperature
$$2.$$ increased welding speed
$$3.$$ increased thermal conductivity of the base metal
$$4.$$ increase in base metal thickness

Which of the statements given above are correct?

A
$$1,2$$ and $$3$$
B
$$1$$ and $$3$$
C
$$1$$ and $$4$$
D
$$2$$ and $$3$$
3
GATE PI 2005
MCQ (Single Correct Answer)
+2
-0.6
The following data relate to an orthogonal turning process:
$$\,\,\,\,\,\,\,\,\,\,\,$$Back rake angle $$=15deg,$$
$$\,\,\,\,\,\,\,\,\,\,\,$$Width of cut $$=2mm,$$
$$\,\,\,\,\,\,\,\,\,\,\,$$Chip thickness $$=0.4mm,$$
$$\,\,\,\,\,\,\,\,\,\,\,$$Feed rate $$=0.2mm/rev.$$

The shear angle is

A
$${14^ \circ }$$
B
$${25^ \circ }$$
C
$${29^ \circ }$$
D
$${75^ \circ }$$
4
GATE PI 2005
MCQ (Single Correct Answer)
+1
-0.3
If each abrasive grain is viewed as a cutting tool, then which of the following represents the cutting parameters in common grinding operations?
A
Large negative rake angle, low shear angle and high cutting speed
B
Large positive rake angle, low shear angle and high cutting speed
C
Large negative rake angle, high shear angle and low cutting speed
D
Zero negative rake angle, high shear angle and high cutting speed
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