1. The stress and strain of a sample under mechanical testing can be classified into two types and ----- 2. Dislocations in the real crystal can be classified into two groups based on their geometry it is ------ and ------. 3. Interstitial imperfection will act as a face resistance for moving of - ----- making it difficult to create permanent deformation in metals and alloys. 4. The error function of Erf (-x), is equal to 5. At the yield point or the proportional limit point, the deformation in this region is of the type ------- 6. There are two type of vacancy mechanism for atomic diffusion -- and ------. 7. In no steady-state diffusion, the ------ and the ‒‒‒. ----- at some particular point in a solid vary with time. 8. If exciton is localized, it is known as ------, and if it extends along a large number of repeating molecule units, then it is known as the -- 9. Elastic limit can be defined as ------ 10. The diffusion coefficient for (Al ³) in (Al2O3) is (3 x 10-¹² cm²/s) at (534 °C) and it is (1 x 106 cm²/s) at (1100°C). the activation energy and the constant Do, is ------ and - 11. A cylindrical specimen of cold-worked copper has a ductility (% EL) of (25%). If it's cold-worked diameter is (30 mm), the radius before deformation is ------.
1. The stress and strain of a sample under mechanical testing can be classified into two types and ----- 2. Dislocations in the real crystal can be classified into two groups based on their geometry it is ------ and ------. 3. Interstitial imperfection will act as a face resistance for moving of - ----- making it difficult to create permanent deformation in metals and alloys. 4. The error function of Erf (-x), is equal to 5. At the yield point or the proportional limit point, the deformation in this region is of the type ------- 6. There are two type of vacancy mechanism for atomic diffusion -- and ------. 7. In no steady-state diffusion, the ------ and the ‒‒‒. ----- at some particular point in a solid vary with time. 8. If exciton is localized, it is known as ------, and if it extends along a large number of repeating molecule units, then it is known as the -- 9. Elastic limit can be defined as ------ 10. The diffusion coefficient for (Al ³) in (Al2O3) is (3 x 10-¹² cm²/s) at (534 °C) and it is (1 x 106 cm²/s) at (1100°C). the activation energy and the constant Do, is ------ and - 11. A cylindrical specimen of cold-worked copper has a ductility (% EL) of (25%). If it's cold-worked diameter is (30 mm), the radius before deformation is ------.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Q(4): Fill in the blanks of the following (Only Ten)
1. The stress and strain of a sample under mechanical testing can be
classified into two types
------
and ------.
2. Dislocations in the real crystal can be classified into two groups
based on their geometry it is ------ and -----
3. Interstitial imperfection will act as a face resistance for moving of -
----- making it difficult to create permanent deformation in metals
and alloys.
4. The error function of Erf (-x), is equal to
5. At the yield point or the proportional limit point, the deformation
in this region is of the type -----
6. There are two type of vacancy mechanism for atomic diffusion ----
-- and ------.
7. In no steady-state diffusion, the
and the ----- at some
particular point in a solid vary with time.
8. If exciton is localized, it is known as ------, and if it extends along a
large number of repeating molecule units, then it is known as the --
9. Elastic limit can be defined as ----
10. The diffusion coefficient for (Al+³) in (Al₂O3) is (3 x 10-¹2 cm²/s)
at (534 °C) and it is (1 x 106 cm²/s) at (1100°C). the activation
energy and the constant Do, is ------ and -----
11. A cylindrical specimen of cold-worked copper has a ductility
(% EL) of (25%). If it's cold-worked diameter is (30 mm), the
radius before deformation is
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