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Sand castings are porous enough and, therefore, cannot be used for pressure sight vessels. Structure obtained by sand casting is loose and hence not stranger than wrought products. As the grains are not close, the casting has lower density and poor strength. Sand casting has poor ductility.
Q. What is sintering ? Explain the stages of sintering. Ans. The operation of heating a green compact to an elevated temperature is known as sintering. It is a process by
A tubular heat exchanger is being used for heating a liquid food from 30 o C to 70 o C. The temperature of the heating medium decreases from 90 o to 60 o C. a) Is the flow conf
different types of switches used in CRO
Depreciation Calculation Two most popular methods of charging depreciation are: straight line and diminishing balance or written-down value (WDV) methods. For reporting to the sha
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Difference between Blow hole and pin hole porosity Blow hole : They appear as cavities in a casting. When they are visible on the upper surface of the castings, th
Sharpe Knife Company expects sales next year to be $1,500,000 if the economy is strong, $800,000if the economy is steady, and $500,000if the economy willb e strong, a 50 percent pr
designing control systems
Diagonal relationship betweent lithium and aluminium
the crate has a mass M and is subjectedto towing P acting at an angle t1 with the horizontal.if the coefficient of static friction is k,determine the magnitude of p to just start
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