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Q1.

a) Describe the four classes of the engineering materials.

b) Recognize the class which each of the given materials belong to.

Present your answer in tabular form:

Silicone, plain carbon steel, concrete, chromium, brass, uranium oxide, aluminum oxide, wool, silicon carbide, cermet, neoprene, carbon fiber reinforced plastic, fiberglass, copper and zirconium oxide.

Q2. Two identical sized specimens of materials A and B are made up from the materials which produce stress v strain graphs as described below:

1780_strain graph.jpg

Answer the given problems; also give reasons for your answers.

a) Name the materials which have the highest value of Young’s Modulus of Elasticity?

b) Under identical loads, name the material which will deflect the most?

c) The specimens are arranged in a press as described below, the press moves uniformly, which of the specimens would be under the maximum stress?

197_stress.jpg

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M99841

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