What will be the fatigue ratio of a notched specimen to an un-notched sample?

Both will have the same fatigue ratio

The un-notched sample will have higher fatigue ratio

The notched specimen will have higher fatigue ratio

Both will have the same fatigue ratio

The ratio of fatigue limit to tensile limit is called _________

fatigue strength reduction factor

Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.	Which of the following microstructure of steel will have the lowest fatigue strength?
A.	Pearlite
B.	Globular
C.	Nodular
D.	Acicular
Answer» B. Globular

Discussion

2.	What will be the fatigue ratio of a notched specimen to an un-notched sample?
A.	The un-notched sample will have higher fatigue ratio
B.	The notched specimen will have higher fatigue ratio
C.	Both will have the same fatigue ratio
D.	Cannot comment
Answer» C. Both will have the same fatigue ratio

Discussion

3.	The ratio of fatigue limit to tensile limit is called _________
A.	notch sensitivity factor
B.	fatigue strength reduction factor
C.	fatigue ratio
D.	stress concentration factor
Answer» D. stress concentration factor

Discussion

4.	The fatigue limit of the cast and wrought iron is around ___________ of tensile strength.
A.	50%
B.	90%
C.	10%
D.	1%
Answer» B. 90%

Discussion

5.	The infrequent tensile stress ____________ the fatigue life, whereas the infrequent compressive load ____________ fatigue life.
A.	increases, increases
B.	Increases, decreases
C.	decrease, increases
D.	decreases, decreases
Answer» C. decrease, increases

Discussion

6.	The minor s rule states that ____________ where n₁, n₂ is the number of cycle at the given stress level and N₁, N₂ are total number of cycle to failure at the given stress level.
A.	n<sub>1</sub>/N<sub>1</sub>+n<sub>2</sub>/N<sub>2</sub>+n<sub>3</sub>/N<sub>3</sub>+ ..+n<sub>k</sub>/N<sub>k</sub>=1
B.	N<sub>1</sub>+N<sub>2</sub>+N<sub>3</sub>+ ..+N<sub>k</sub>=1
C.	n<sub>1</sub>+n<sub>2</sub>+n<sub>3</sub>+ ..+n<sub>k</sub>=1
D.	n<sub>1</sub>/N<sub>1</sub>+n<sub>2</sub>/N<sub>2</sub>+n<sub>3</sub>/N<sub>3</sub>+ ..+n<sub>k</sub>/N<sub>k</sub>=0
Answer» B. N<sub>1</sub>+N<sub>2</sub>+N<sub>3</sub>+ ..+N<sub>k</sub>=1

Discussion

7.	The Minor s rule is used to calculate the ____________
A.	cumulative fatigue life
B.	endurance limit
C.	number of cycles to failure
D.	stress ratio
Answer» B. endurance limit

Discussion

8.	The fatigue failure of the material is cumulative property.
A.	True
B.	False
Answer» B. False

Discussion

9.	The electroplating always has a positive effect on fatigue properties.
A.	True
B.	False
Answer» C.

Discussion

Explore topic-wise MCQs in Mechanical Metallurgy.

Which of the following microstructure of steel will have the lowest fatigue strength?

What will be the fatigue ratio of a notched specimen to an un-notched sample?

The ratio of fatigue limit to tensile limit is called _________

The fatigue limit of the cast and wrought iron is around ___________ of tensile strength.

The infrequent tensile stress ____________ the fatigue life, whereas the infrequent compressive load ____________ fatigue life.

The minor s rule states that ____________ where n1, n2 is the number of cycle at the given stress level and N1, N2 are total number of cycle to failure at the given stress level.

The Minor s rule is used to calculate the ____________

The fatigue failure of the material is cumulative property.

The electroplating always has a positive effect on fatigue properties.

The infrequent tensile stress the fatigue life, whereas the infrequent compressive load fatigue life.

The minor s rule states that ____________ where n₁, n₂ is the number of cycle at the given stress level and N₁, N₂ are total number of cycle to failure at the given stress level.