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## GATE PI 1991

Exam Held on Thu Jan 01 1970 00:00:00 GMT+0000 (Coordinated Universal Time)
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## GATE PI

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

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