What is the correct answer?


For preparation of porous bearings by powder metallurgy, preferred particle shape is

A. Spherical

B. Nodular

C. Irregular

D. No preferred shape

Correct Answer :

A. Spherical

Related Questions

The activity of pure hydrogen gas at 1000°C and 5 atm pressure A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at… In the blast furnace, incorporation of water vapour in the blast gives… Starting friction is low in case of the __________ lubrication. Closeness of packing is maximum in case of __________ crystal lattice. Enzymes belong to the category of Joule-Thomson co-efficient is the ratio of A material is capable of resisting softening at high temperature, because… Shrinkage allowance on pattern is provided to compensate for shrinkage… Tin based white metals are used, where bearings are subjected to Which of the following commonly used condenser tube materials has the… Electrochemical corrosion can occur, only if __________ is present in… Fire refining process is employed in case of The ratio of the shear stress to the principal stress on a principal plane… Yield strength of a material is determined by the __________ test. __________ is the most important element, which controls the physical… Common salt is produced from sea water in India generally by the __________… Good design of the casing of a centrifugal pump aims at minimising the Colour comparator is used to measure the __________ is used for tying the steel columns to concrete foundation. Addition of small amount of __________ to grey cast iron is done to produce… Minimum number of members required to form a Public Limited Joint Stock… Which of the following is an acidic constituent of B.F. slag? Air/fuel ratio by weight for combustion of methane with theoretical quantity… Which of the following test is used for distinguishing among dry oils,… Austempering process results in the formation of __________ structure. Steels with high carbon equivalent have poor Weldability, because in these… __________ is the hardest oxide and is hence used where high wear resistance… Lap joints are preferred over butt joints in soldering/brazing, because… __________ is used as a material of construction for the blade of power…