CS/B.TECH(PWE)/SEP. SUPPLE/SEM-8/PWE-804A/2012
2012
TECHNOLOGY OF MACHINING & METAL CUTTING
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following :
10x1 = 10
i) A condition tending to promote built-up edge formation
includes
a) high cutting speed
b) large rake angle
c) large uncut thickness
d) more flow of cutting fluid.
ii) A universal chuck has the feature of
a) four jaws
b) independently moving jaws
c) more gripping
d) self centering.
iii) A negative rake angle on tool imposes cutting speed
condition as
a) high b) moderate
c) low d) none of these.
iv) the sum of back rake angle, the end clearance and the
tool wedge angle in turning operation is
a)
b)3/4
c) /2 d)/4 .
v) In a twist drill, the chisel is primarily provided for
a) cutting action b) axial thrust
c) drilling torque d) none of these.
vi) Very hard work material can be turned at
a) low cutting speed and small feed
b) high cutting speed and small feed
c) low cutting speed and large feed
d) high cutting speed and large feed.