Related Questions

Powder metallurgy process does not make metal powder by
A Atomisation
B Grinding/milling
C Hammering
D Electrolytic deposition
Powder metallurgy technique is used in the production of __________ tools.
A Tungsten carbide
B High carbon steel
C High speed steel
D Drilling
Powder metallurgy is used to produce
A High precision components with complex cavities and sharp features
B Components of large size
C Porosity free components
D Components of such alloys whose constituents do not form alloys readily
The operation in which oil is permeated into the pores of a powder metallurgy product is known as
A Mixing
B Sintering
C Impregnation
D Infiltration
Powder metallurgy processing can be used for making
A Dispersion strengthened copper rod
B Self lubricating bearing and cemented carbide
C Connecting rod
D Piston
Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of
A 90% tungsten carbide and 10% cobalt
B 70% aluminium oxide & 30% silica
C 30% nickel, 15% chromium & 55% tungsten
D 65% tungsten & 35% zirconium
For preparation of porous bearings by powder metallurgy, preferred particle shape is
A Spherical
B Nodular
C Irregular
D No preferred shape
Gross heating value of coal is __________ the net heating value.
A Higher than
B Lower than
C Same as
D None of these
Heating wet steam at constant temperature is heating it at constant
A Volume
B Pressure
C Entropy
D Enthalpy
In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating
A Decreases with increase in Rankine cycle efficiency
B Increases with increase in Rankine cycle efficiency
C Is unaffected by increase in Rankine cycle efficiency
D None of the above

Next steps