1
GATE ME 1987
Subjective
+5
-0
In a turning operation the tool life of the carbide tool was found to be $$20min$$ and $$100min,$$ at cutting speeds of $$120m/min$$ and $$80m/min$$ respectively. What will be the tool life of the tool under same condition but at a cutting speed of $$100m/min.$$
2
GATE ME 1987
Fill in the Blanks
+1
-0
For blanking and piercing operations, clearance is provided on the ................... and the ......................... respectively
3
GATE ME 1987
MCQ (Single Correct Answer)
+1
-0.3
The hole $${40^{\matrix{
{0.020} \cr
{ + 0.000} \cr
} }}$$ & shaft, $${40^{\matrix{
{ + 0.010} \cr
{ - 0.010} \cr
} }}$$ when assembled will result in
4
GATE ME 1987
Subjective
+2
-0
A 6 metre long supported wooden beam of rectangular section 10 cm $$ \times $$ 20 cm deep is strengthened by mild steel plates 0.5 cm $$ \times $$ 10 cm wide at the top and bottom fibre over the entire length. Find the minimum supportable uniformly distributed load considering failures in steel and wood due to flexure. Weakening of wood due to screws and weakening of the steel plates due to drilled holes may be ignored.
Permissible tensile stress for steel = 156.8 N/mm2
Permissible tensile stress for steel = 14.89 N/mm2
Young's modulus of mild steel = 1.96 $$ \times $$ 105 N/mm2
Young's modulus of wood = 0.117 $$ \times $$ 105 N/mm2
Permissible tensile stress for steel = 156.8 N/mm2
Permissible tensile stress for steel = 14.89 N/mm2
Young's modulus of mild steel = 1.96 $$ \times $$ 105 N/mm2
Young's modulus of wood = 0.117 $$ \times $$ 105 N/mm2
Paper analysis
Total Questions
Fluid Mechanics
6
Machine Design
4
Production Engineering
10
Strength of Materials
2
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