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
Related Mcqs:
- Which of the following can be manufactured using powder metallurgy techniques ?
A. Brake linings
B. Bearings
C. Carbide tool tips
D. All A, B and C - 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 - Which of the following is the most wear resistant grade of carbide used for the cutting tools ?
A. Aluminium carbide
B. Tungsten carbide
C. Nickel carbide
D. Iron carbide - For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?
A. Spherical
B. Nodular
C. Irregular
D. No preferred shape - 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 - Cemented carbide tools are not suitable for cutting___________________?
A. Aluminium
B. Brass
C. Cast iron
D. Steel - Alloy powder manufactured by the following process have spherical shapes ?
A. Electrochemical deposition
B. Gaseous reduction
C. Atomisation
D. Mechanical attrition - Non-ferrous alloys used for making cutting tools need not have high__________________?
A. Abrasion resistance
B. Toughness
C. Red hardness
D. Cutting speed - Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?
A. Pure oxygen has been used for combustion
B. Nitrogen percentage in the fuel is very high
C. Excess air has been used for combustion
D. Hydrogen is not present in the fuel
