GATE PI 1991
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GATE PI

The optimum pouring time for a casting depends on several factors. One important factor among them is
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A rectangular block of steel $$C.S$$ $$100\,\, \times \,\,150mm$$ and $$250mm$$ height is to be cast with out any riser.
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Pressure die casting deals with casting metals of relatively ............. A ............. melting point and provides ..
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Low permeability molds and low pouring temperature of the molten metal causes ......................... defect in castin
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Ceramic slurry is used in making the molds for
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The voltage-arc length characteristic of a $$DC$$ arc is given by $$V=20+40L.$$ where $$L=$$ arc length in $$cm.$$ The p
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A resistance welder is rated at $$50$$ $$kVA,$$ at $$50\% $$ duty cycle. Secondary voltage is always constant at $$25$$
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In welding process, penetration is increased by
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Continuous rails for Indian railways are welded by ........ Welding process.
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....................... is the non-fusion method of joining dissimilar metals with metals whose melting temp is greater
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In spot welding of aluminium sheets, the welding current should be .........A........ and weld time should be kept .....
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High alloy steel components are preheated before welding for reducing
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Thrust force in drilling can be reduced by .................A............... the point angle and by ..........B.........
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Feed motion can be provided with stepper motors in $$CNC$$
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A drilling machine has to be designed with $$8$$ spindle speeds ranging approximately between $$120$$ to $$1200$$ $$rpm.
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Amount of energy consumption per unit volume of metal removal is maximum in
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The teeth of both external and internal spur gears can be cut on
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During orthogonal turning a steel rod at feed $$0.25$$ $$mm$$ per revolution and depth of cut $$4.00$$ $$mm$$ by a tool
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Amount of energy consumption for unit volume of metal removal is maximum in
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Increase in rake angle causes ..........A................ in chip thickness and .............B......... in shear angle (
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A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The numbe
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In .................. A ................. operation the diameter of the desired hole will be smaller than the diameter
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In progressive die (for sheet metal), spring loaded stripper plate is used to clamps the stock until:
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At $${1000^ \circ }C$$ the crystallographic structure of iron is ....................
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Seamless long steel tubes are manufactured by rolling, drawing and .............
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The combination of slip gauges to obtain a dimension of $$10.35$$ $$mm$$ will be
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Abbe's principle of alignment states that the scale axis must coincide with the line of
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For angle measurement in metrology, the following pair can be used in conjunction with each other
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Outside micrometer is calibrated with the help of
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