1
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
Orthogonal turning is performed on a cylindrical work piece with shear strength of $$250Mpa.$$ The following conditions are used: cutting velocity is $$180m/min,$$ feed is $$0.2mm/rev,$$ depth of cut is $$3mm,$$ chip thickness ratio is $$0.5.$$ The orthogonal rake angle is $$7deg.$$ Apply Merchants theory for analysis,

The cutting and frictional forces respectively are

A
$$568N ; 387N$$
B
$$565N ; 381N$$
C
$$202N ; 120N$$
D
$$202N ; 356N$$
2
GATE ME 2008
MCQ (Single Correct Answer)
+1
-0.3
Internal gear cutting operation can be performed by
A
Milling
B
Shaping with rack cutter
C
Shaping with pinion cutter
D
Hobbing
3
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
The figure shows an incomplete schematic of a conventional lathe to be used for cutting threads with different pitches. The speed gear box $${U_v}$$ is shown and the feed gear box $${U_s}$$ is to be placed. $$P,Q,R$$ and $$S$$ denote locations and have no other significance. Changes in $${U_v}$$ should $$NOT$$ affect the pitch of thread being cut and changes in $${U_s}$$ should NOT affect the cutting speed. GATE ME 2008 Production Engineering - Machining Question 5 English

The correct connections and the correct placement of $${U_s}$$ are given below

A
$$Q$$ & $$E$$ are connected. Us is place between $$P$$ and $$Q$$
B
$$S$$ & $$E$$ are connected. Us is place between $$R$$ and $$S$$
C
$$Q$$ & $$E$$ are connected. Us is place between $$Q$$ and $$E$$
D
$$S$$ & $$E$$ are connected. Us is place between $$S$$ and $$E$$
4
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
In the deep drawing of cups, blanks show a tendency to wrinkle up around the periphery (flange). The most likely cause and remedy of the phenomenon are respectively,
A
Buckling due to circumferential compression: increase blank holder pressure
B
High blank holder pressure and high friction: reduce blank holder pressure and apply lubricant
C
High temperature causing increase in circumferential length; apply coolant to blank
D
Buckling due to circumferential compression; decrease blank holder pressure.
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