GATE 1989 Production & Industrial
21 questions across 1 session
Collapsible tubes are made by
The blank diameter used in thread rolling will be
At the last hammer stroke the excess material from the finishing cavity of a forging die is pushed into .............
In a wire drawing operation diameter of $$6mm$$ is reduced in stages to a diameter of $$1.34mm.$$ Assuming ideally rigid plastic material and ideally lubricant condition, $$i)$$$$\...
Green strength in powder metallurgy refers to the strength of
Molten aluminium was poured in a sand mold and the thickness of solid skin formed after $$20$$ seconds and $$50$$ seconds were fond to be $$3mm$$ and $$4.5mm$$ respectively. What w...
Flatness of slip gages is checked with
Poor collapsibility of the mold leads to .......... type of casting defect in aluminium castings.
In welding brass with oxy-acetylene flame, the type of flame used is
In welding a mild steel sheet using an oxy-acetylene flame, the total amount of acetylene consumed was $$8.0$$ liters the oxygen consumption from the cylinder is
What is the velocity of the steel at the bottom of the sprue if the sprue height is $$30$$ $$cm$$? Assume the frictional and other losses to be $$20\% $$
If the $$z$$-axis & $$x$$-axis of $$CNC$$ lathe are provided with straight line controls, it is possible to carry out
Abrasives are not used in
If the number of double strokes per minute in a shaper is calculated by ($$0.643\, \times \,$$ Cutting speed in $$mm/min$$) / length of the stroke in $$m,$$ then the return speed i...
In turning operation the surface finish can be improved by decreasing
Calculate the tonnage capacity of the broaching machine required to broach on the hole under the following conditions. Diameter of the finished hole $$=75mm,$$ rise per tooth $$=0....
Outside diameter of bush is turned using a mandrel. The mandrel diameter is maintained as $${30^{\matrix{ { + 0.000} \cr { - 0.050} \cr } }}\,\,mm$$ and the bore diameter is $${30^...
Negative allowance is provided on the pattern to take care of
For the same material, powder metallurgy process is superior to casting for
Shrinkage allowance on pattern is provided to compensate for shrinkage when
The process by which shell like castings (like toys) are made is