1
GATE PI 2003
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is not a synthetic abrasive material
A
silicon carbide
B
aluminium oxide
C
titanium nitride
D
cubic boron nitride
2
GATE PI 2001
MCQ (Single Correct Answer)
+1
-0.3
In Whitworth quick return mechanism (used in shapers) the velocity of the $$ram$$ is maximum at
A
middle of the forward stroke
B
beginning of return stroke
C
end of return stroke
D
middle of the return stroke
3
GATE PI 1995
MCQ (Single Correct Answer)
+1
-0.3
The material most commonly used for manufacturing of machine tool beds is
A
$$MS$$
B
Gray $$CI$$
C
White $$CI$$$
D
Galvanized iron
4
GATE PI 1995
MCQ (Single Correct Answer)
+1
-0.3
A grinding wheel is said to be glazed if
A
grains have become blunt, but do not fall out
B
gap between the grains is filled by swarf
C
it becomes black due to burning
D
part of the wheel is chipped off
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