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ESE ME 2019: Engineering Materials Quiz-1

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Question 1

Consider the following statements regarding composite materials:
[1]. Material is termed as advanced composite, if fibres are directionally oriented and continuous.
[2]. Reinforced fibre glass products are strong and light weight.
[3]. Concrete is reinforced with steel rebar, the rebar becomes matrix.
[4]. Pearlitic steels are composite materials.
Which of these statements are correct?

Question 2

Which among the following material has high ignition temperature?

Question 3

Direction: The following items consists of two statements, one labelled as the Assertion ‘A’ and the other labeled as Reason ‘R’. You are to examine these two statements carefully and select your answers to these items using the codes given below:
Assertion (A): The susceptibility of a ferromagnetic material decreases with an increase in Curie temperature.
Reason (R): A critical temperature at which the alignment of magnetic moments vanishes is called Curie temperature.

Question 4

Match List-I (Alloying Element) with List-II (Effect on Steel) and select the correct answer using the codes give below the lists:
List-I
[A]. Vanadium
[B]. Molybdenum
[C]. Silicon
[D]. Chromium
List-II
[1]. Increases endurance strength
[2]. Improves creep properties
[3]. Increases hardness
[4]. Increases resistance to high temperature oxidation

Question 5

Statements (I): Parts made by powder metallurgy do not have as good physical properties as parts casted.
Statements (II): Particle shape in powder metallurgy influences the flow characteristic of the powder.

Question 6

Which is correct for spheroidising treatment process?

Question 7

Which of the following methods are used for protection against fracture?
[1]. Avoid sharp corners and notches in the part to eliminate points of stress concentration
[2]. Provide better finish to the surface by polishing
[3]. Introduce residual tensile stresses on the surface
Which of these statements are correct?

Question 8

Consider the following statements:
[1]. Cast Iron has poor ability to damp vibrations.
[2]. Cast Iron has higher compressive strength compared to that of steel.
[3]. Cast Iron parts are suitable where permanent deformation is preferred over fracture.
Which of these statements is/are correct?

Question 9

Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
[A]. System
[B]. Phase
[C]. Phase equilibrium
[D]. Components
List-II
[1]. Free energy is a minimum
[2]. Chemical elements or chemical compounds
[3]. Consists of solids, liquids or gases or their combination
[4]. Homogeneous portion of a system that has uniform physical characteristics

Question 10

Wood is a natural composite consisting of which of the following?
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Mar 17ESE & GATE ME