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Engineering-materials Questions Set 8:

Quiz Mode

For which of the following design factor of safety values will the design work properly?

0.1

0.8

Solution:

What is the primary use of nickel steel?

Engine block

Turbine blades

Kitchen utensils

Aeroplane parts

Solution:

Which of the following best describes the structure of wood?

Homogenous material

Granular material

Amorphous material

Cellular material

Solution:

As the temperature of a metal rises, the rate of vacancy diffusion in the metal:

Increases

Decreases

May increase or decrease

Remains the same

Solution:

What is the property of sand due to which it evolves a great amount of steam and other gases called?

cohesiveness

adhesiveness

collapsibility

permeability

Solution:

To have creep resistance property, what property should the metal possess?

Low melting point

None of these

High melting point

Both high and low melting point

Solution:

The crystal structure of metals is typically studied using which technique?

X-ray technique

Metallographic technique

Electron microscopy

High-powered microscope

Solution:

When an equal number of cations and anions are missing from their lattice sites in an ionic crystal, the defect is called

Substitutional impurity

Interstitial impurity

Frenkel's defect

Schottky's defect

Solution:

Why does the structure retain austenite after heat treatment?

The rate of cooling is less than the critical cooling rate

The rate of cooling is greater than the critical cooling rate

The martensite formation starting temperature is above the room temperature

The martensite formation finish temperature is below the room temperature

Solution:

Which of the following statements about linear and non-linear stress-strain analysis is correct?

In linear stress analysis, the maximum permissible stress is compared with the ultimate tensile strength.

In linear stress analysis, the maximum permissible stress is compared with the yield strength.

In non-linear stress analysis, the maximum permissible stress is the yield strength.

None of the above three statements is correct.

Engineering-materials Questions Set 8:

For which of the following design factor of safety values will the design work properly?

Solution:

What is the primary use of nickel steel?

Solution:

Which of the following best describes the structure of wood?

Solution:

As the temperature of a metal rises, the rate of vacancy diffusion in the metal:

Solution:

What is the property of sand due to which it evolves a great amount of steam and other gases called?

Solution:

To have creep resistance property, what property should the metal possess?

Solution:

The crystal structure of metals is typically studied using which technique?

Solution:

When an equal number of cations and anions are missing from their lattice sites in an ionic crystal, the defect is called

Solution:

Why does the structure retain austenite after heat treatment?

Solution:

Which of the following statements about linear and non-linear stress-strain analysis is correct?

Solution:

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