1
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
A hole of $$40$$ $$mm$$ diameter is pierced in a steel sheet of $$4$$ $$mm$$ thickness without shear on the tool. Shear strength of steel is $$400$$ $$N/m{m^2},$$ and penetration is $$25\% .$$ What is the expected percentage load reduction if a shear of $$1$$ $$mm$$ is provided on the punch?
A
$$25.00$$
B
$$33.33$$
C
$$50.00$$
D
$$66.67$$
2
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
A cylindrical cup of $$48.5$$ $$mm$$ diameter and $$52$$ $$mm$$ height has a corner radius of $$1.5$$ $$mm$$ Cold rolled steel sheet of thickness $$1.5$$ $$mm$$ is used to produce the cup. Assume trim allowance as $$2$$ $$mm$$ per $$25$$ $$mm$$ of cup diameter. What is the blank size in $$mm$$ ?
A
$$102.0$$
B
$$115.4$$
C
$$120.5$$
D
$$128.5$$
3
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
The extrusion process(es) used for the production of toothpaste tubes is / are

$$1.$$ Tube extrusion
$$2.$$ Forward extrusion
$$3.$$ Impact extrusion

A
$$1$$ only
B
$$1$$ & $$2$$
C
$$2$$ & $$3$$
D
$$3$$ only
4
GATE PI 2004
MCQ (Single Correct Answer)
+2
-0.6
In an interchangeable assembly, a shaft of $${20.00^{\matrix{ { - 0.015} \cr { - 0.005} \cr } }}\,\,mm$$ diameter and a hole of $${20.00^{\matrix{ { - 0.025} \cr { - 0.010} \cr } }}\,\,mm$$ diameter form a mating pair. In the worst assembly conditions, the clearance between them will be
A
$$40$$ microns
B
$$30$$ microns
C
$$25$$ microns
D
$$15$$ microns
EXAM MAP