Answer: Option 3 When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as Permanent mould casting method
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1 Answers 1 viewsAnswer: Option 3 A swell occurs when the mold wall gives way across a whole face, and is caused by an improperly rammed mold. Burn-on occurs when metallic oxides interact...
1 Answers 1 viewsAnswer: Option 2 A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as Sand wash
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1 Answers 1 viewsAnswer: Option 4 All time zones of the world are described in term of the number of hours difference between the standard meridian of that zone and the Greenwich Meridian....
1 Answers 1 viewsAnswer: Option 4 Rocks which are formed by the solidification of lava on the earth's surface are Basalts. Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and...
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