GATE 1991 Production & Industrial
28 questions across 1 session
A cup of $$10$$ $$cm$$ height and $$5$$ $$cm$$ diameter is to be made from a sheet metal of $$2mm$$ thickness. The number of deductions necessary will be
In .................. A ................. operation the diameter of the desired hole will be smaller than the diameter of the .................... B ...................... A. blank...
In progressive die (for sheet metal), spring loaded stripper plate is used to clamps the stock until:
At $${1000^ \circ }C$$ the crystallographic structure of iron is ....................
Seamless long steel tubes are manufactured by rolling, drawing and .............
Abbe's principle of alignment states that the scale axis must coincide with the line of
Amount of energy consumption for unit volume of metal removal is maximum in
Pressure die casting deals with casting metals of relatively ............. A ............. melting point and provides ........ B.......... production rate. A. higher / lower,$$\,\,...
Low permeability molds and low pouring temperature of the molten metal causes ......................... defect in castings.
The voltage-arc length characteristic of a $$DC$$ arc is given by $$V=20+40L.$$ where $$L=$$ arc length in $$cm.$$ The power source characteristics can be approximated by a straigh...
In spot welding of aluminium sheets, the welding current should be .........A........ and weld time should be kept ............B......... than for $$MS$$ sheet of same thickness. (...
....................... is the non-fusion method of joining dissimilar metals with metals whose melting temp is greater than $${400^ \circ }C$$.
High alloy steel components are preheated before welding for reducing
A resistance welder is rated at $$50$$ $$kVA,$$ at $$50\% $$ duty cycle. Secondary voltage is always constant at $$25$$ volts. If a job requires $$1500$$Amps current, determine the...
In welding process, penetration is increased by
Continuous rails for Indian railways are welded by ........ Welding process.
Feed motion can be provided with stepper motors in $$CNC$$
Amount of energy consumption per unit volume of metal removal is maximum in
A drilling machine has to be designed with $$8$$ spindle speeds ranging approximately between $$120$$ to $$1200$$ $$rpm.$$ The $${5^{th}}$$ spindle speed is
The teeth of both external and internal spur gears can be cut on
Increase in rake angle causes ..........A................ in chip thickness and .............B......... in shear angle (a) increase / reduction (b) increase / decrease
During orthogonal turning a steel rod at feed $$0.25$$ $$mm$$ per revolution and depth of cut $$4.00$$ $$mm$$ by a tool of geometry $${0^0},\, - {10^0},\,\,{8^0},\,\,{7^0},\,\,{15^...
Outside micrometer is calibrated with the help of
The combination of slip gauges to obtain a dimension of $$10.35$$ $$mm$$ will be
For angle measurement in metrology, the following pair can be used in conjunction with each other
The optimum pouring time for a casting depends on several factors. One important factor among them is
Ceramic slurry is used in making the molds for
A rectangular block of steel $$C.S$$ $$100\,\, \times \,\,150mm$$ and $$250mm$$ height is to be cast with out any riser. The block is moulded entirely in the drag of a green sand f...