Matellurgy and Material Science Mid - II, November - 2014

1.Examples of non-ferrous metal are
  • Al
  • Mg
  • Co
  • All of the above
Answer: D
2.Porous bearing materiels are produced by the following techniques
  • Casting
  • Welding
  • Powder Metallurgy
  • Extractive Metallurgy
Answer: C
3.The following are the application of Glasses:
  • Building walls
  • Roofing tiles
  • Stoneware
  • All of the above
Answer: D
4.Oxide-Base cermets is composed of:
  • Aluminum oxide
  • Chromium oxide
  • A&B
  • Non of the above
Answer: C
5.FRP is a.
  • Thermo plastic
  • Thermoset
  • Composite
  • Elestomer
Answer: C
6.An alloy of copper, tin, and zinc is known as ________
  • gun metal
  • muntz metal
  • bronze
  • brass
Answer: C
7.Which of the following ceramics are commonly used as abrasives in grinding wheels?
  • icon dioxide
  • calcium oxide
  • carbon monoxide
  • silicon carbide
Answer: D
8.__________ is an inorganic, nonmetallic material which cools to a rigid solid without crystallization
  • silicon carbide
  • glass
  • calcium oxide
  • silicon dioxide
Answer: B
9.__________ is/are the characteristic propertie/s of composite materials
  • high strength-to- weight and stiffness-to-weight ratios
  • good fatigue properties and toughness
  • anisotropic properties in many cases
  • a, b, & c
Answer: D
10.Which of the following metals are most commonly used as the matrix material in fiber-reinforced metal–matrix composites?
  • titanium
  • copper
  • iron
  • none
Answer: A
11.Abrasive are made of a___________________
Answer: Ceramic material
12.In T-T-T Diagram slow cooling of austenite results in ________________
Answer: Coarse pearlite
13.Major applications of titanium alloys are _____________________
Answer: Air-craft engine
14.Mostly used matrix material in TiC composite are _______________
Answer: Nickel
15.In powder metallurgy the sintering is carried out in______________ atmosphere
Answer: Neutral
16._______ is an alloy of copper and zinc
Answer: Brass
17.___________ is heat resistant ceramic materials
Answer: Refractory material
18.A ____________ is a materials system consisting of two or more distinct phases whose combination results in properties that differ from those of its constituents.
Answer: Composite
19.A ____________ is defined as a composite consisting of ceramic grains imbedded in a metallic matrix
Answer: Cermet
20.______ material has more compressive strength than tensile strength
Answer: Ceramic