Q.1
The two types of metals are Ferrous and Nonferrous.
  • True
  • False
Q.2
Sintering is done to _____________
  • increase final strength
  • decrease final strength
  • initially increase and then to decrease the strength
  • initially decrease and then to increase the strength
Q.3
What process of rapidly cooling are used.
  • Air quenching
  • Oil quenching
  • Water quenching
  • Brine quenching
  • All Of above
Q.4
Metal consists of one or more chemical elements having a crystalline structure.
  • Atoms
  • Nuclei
  • Grains
  • All Of above
Q.5
Stainless steel contains which elements.
  • Iron
  • Carbon
  • Both A & B
  • None of these
Q.6
Which of the processes listed below is NOT included in powder metal compaction
  • Pressing
  • Casting
  • Extrusion
  • Iso-static pressing
Q.7
Powder metallurgy is a process whereby metallic shapes are manufactured from
  • metallic powders
  • plastic
  • machining
  • grinding
Q.8
Which of below is the limitation / disadvantage of powder metallurgy?
  • pure metal powders are very expensive to produce
  • wide range of metaal powder like steels,bronze etc
  • poor plastic properties except good strength and elongation
  • the geometries are very limit
Q.9
The following are the advantages of powder metallurgy EXCEPT?
  • composition of product can be controlled
  • close dimensional tolerances can be mantained
  • there are no lost of material
  • the product has high porosity
Q.10
A atom that gains electrons in the reaction is ...
  • being reduced
  • the reducing agent
  • always a nonmetal
Q.11
The process of crushing the ore into a powder is called _______.
  • pulverization
  • powderation
  • smelting
  • calcination
Q.12
What property defines the manner in which various metals will react to cutting tools.
  • Tensile strength
  • Strength
  • Machinability
  • Finish
Q.13
What property defines a metals ability to withstand twisting, bending, stretching, or deformation without breaking.
  • Hardness
  • Brittleness
  • Ductility
  • Toughness
Q.14
What occupation is most likely to specialize in the materials science.
  • Engineers
  • Metallurgist
  • Welder
  • Machinist
Q.15
Which of below is the limitations and disadvantage of powder metallurgy?
  • pure metal powders are very expensive to produce
  • wide range of metaal powder like steels,bronze etc
  • poor plastic properties except good strength and elongation
  • the geometries are very limit
Q.16
Which of the following is the advantages of powder metallurgy except?
  • composition of product can be controlled
  • close dimensional tolerances can be mantained
  • there are no lost of material
  • the product has high porosity
Q.17
Powder metallurgy process consist of the following operations, in sequence:
  • powder production, blending, compaction, sintering
  • powder production, sintering, compaction, blending
  • powder production, compaction, blending, sintering
  • None of these
Q.18
Which one is the third process occur in sintering sequence ?
  • point bonding
  • grain boundary
  • pores
  • necks
Q.19
This is the pre-alloyed powder used in powder metallurgy, except ?
  • stainless steel
  • cooper alloy
  • high speed steel
  • aluminum
Q.20
Which one is not the particle shape in powder metallurgy ?
  • cylindrical
  • rectangular
  • spherical
  • cubic
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