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Mechanical Engineering (ME) 2012
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In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
Match the following metal forming processes with their associated stresses in the workpiece.
| Metal forming process | Type of stress |
|---|---|
| 1. Coining | P. Tensile |
| 2. Wire Drawing | Q. Shear |
| 3. Blanking | R. Tensile and compressive |
| 4. Deep Drawing | S. Compressive |
In an interchangeable assembly, shafts of size 25.0000410−0010 mm mate with holes of size 25.0000200−0020 mm. The maximum interference (in microns) in the assembly is
During normalizing process of steel, the specimen is heated
Oil flows through a 200 mm diameter horizontal cast iron pipe (friction factor, f = 0.0225) of length 500 m. The volumetric flow rate is 0.2 m3/s. The head loss (in m) due to friction is (assume g = 9.81 m/s2)
For an opaque surface, the absorptivity (α), transmissivity (τ) and reflectivity (ρ) are related by the equation