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3 years ago

7

Not a characteristic property of ceramic material (a) high temperature stability (b) high mechanical strength (c) low elongation

(d) low hardness

2 answers:

love history [14]3 years ago

6 0

Answer:

d. low hardness

Explanation:

The hardness is the resistance to penetration. Low hardness is not a characteristic property of ceramic material.

Nostrana [21]3 years ago

3 0

Low hardness is not a characteristic property of ceramic material.

Answer: Option D

<u>Explanation: </u>

One of the most important properties of ceramic material is the hardness that the material displays. The hardness owes to the joining of brittle fracture and plastic flow that makes the material to defend against penetration.

The hardness can be tested with the Vickers test. The hardness of ceramic makes its dominance in the use of construction purpose and manufacture of products. Other general properties are less conductivity, high melting temperature, etc.

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a.)

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Find the quality of the water at state 2

since $h_f$ at 10KPa < $h_2$ < $h_g$ at 10KPa

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since, Q = 0

$S=m(s_2-s_1)\\=2\frac{kg}{s}(7.398-7.1693)kJ/kg\\=0.4574kW/k$

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Answer:

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