GATE PI 1991
GATE PI
The optimum pouring time for a casting depends on several factors. One important factor among them is
View Question A rectangular block of steel $$C.S$$ $$100\,\, \times \,\,150mm$$ and $$250mm$$ height is to be cast with out any riser.
View Question Pressure die casting deals with casting metals of relatively ............. A ............. melting point and provides ..
View Question Low permeability molds and low pouring temperature of the molten metal causes ......................... defect in castin
View Question Ceramic slurry is used in making the molds for
View Question The voltage-arc length characteristic of a $$DC$$ arc is given by $$V=20+40L.$$ where $$L=$$ arc length in $$cm.$$ The p
View Question A resistance welder is rated at $$50$$ $$kVA,$$ at $$50\% $$ duty cycle. Secondary voltage is always constant at $$25$$
View Question In welding process, penetration is increased by
View Question Continuous rails for Indian railways are welded by ........ Welding process.
View Question ....................... is the non-fusion method of joining dissimilar metals with metals whose melting temp is greater
View Question In spot welding of aluminium sheets, the welding current should be .........A........ and weld time should be kept .....
View Question High alloy steel components are preheated before welding for reducing
View Question Thrust force in drilling can be reduced by .................A............... the point angle and by ..........B.........
View Question Feed motion can be provided with stepper motors in $$CNC$$
View Question A drilling machine has to be designed with $$8$$ spindle speeds ranging approximately between $$120$$ to $$1200$$ $$rpm.
View Question Amount of energy consumption per unit volume of metal removal is maximum in
View Question The teeth of both external and internal spur gears can be cut on
View Question During orthogonal turning a steel rod at feed $$0.25$$ $$mm$$ per revolution and depth of cut $$4.00$$ $$mm$$ by a tool
View Question Amount of energy consumption for unit volume of metal removal is maximum in
View Question Increase in rake angle causes ..........A................ in chip thickness and .............B......... in shear angle
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View Question A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The numbe
View Question In .................. A ................. operation the diameter of the desired hole will be smaller than the diameter
View Question In progressive die (for sheet metal), spring loaded stripper plate is used to clamps the stock until:
View Question At $${1000^ \circ }C$$ the crystallographic structure of iron is ....................
View Question Seamless long steel tubes are manufactured by rolling, drawing and .............
View Question The combination of slip gauges to obtain a dimension of $$10.35$$ $$mm$$ will be
View Question Abbe's principle of alignment states that the scale axis must coincide with the line of
View Question For angle measurement in metrology, the following pair can be used in conjunction with each other
View Question Outside micrometer is calibrated with the help of
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