1
GATE ME 1995
Subjective
+5
-0
While turning a $$C15$$ steel of $$160mm$$ diameter at $$215rpm,$$ $$2.5mm$$ depth of cut and feed of $$0.16mm/rev$$ by a tool of geometry $$0-10-8-9-15-75-0mm,$$ the following observations were made. Tangential component of the cutting force $$=500N,$$ axial component of the cutting force $$=200N,$$ chip thickness $$=0.48mm.$$ Determine the dynamic shear strength of the work piece material.
2
GATE ME 1995
True or False
+1
-0
Slip gauges are calibrated by outside micrometer
A
TRUE
B
FALSE
3
GATE ME 1995
Fill in the Blanks
+1
-0
Checking the diameter of a hole using GO and NOGO gauges is an example of inspection by …………… (variables/attributes)
4
GATE ME 1995
MCQ (Single Correct Answer)
+1
-0.3
A free bar of length 1 m is uniformly heated from $${0^ \circ }C$$ to a temperature of $${t^ \circ }C$$. $$\alpha $$ is the coefficient if linear expansion and $$E$$ the modulus of elasticity. The stress in the bar is
A
$$\alpha tE$$
B
$$\alpha tE/2$$
C
zero
D
none of the above