Explore topic-wise MCQs in Mechanical Metallurgy Questions and Answers.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

The following diagram shows a rectangular plate with a circular hole at the ends. The dimension of the plate is shown in the figure. If the ratio of r/h increase, the stress concentration factor Kt will ______________

A. increase
B. decrease
C. remain constant
D. cannot comment
Answer» C. remain constant
Discussion
2.

The following diagram shows a rectangular plate with a circular hole at the ends. The dimension of the plate is shown in the figure. If the ratio of b/r increase, the stress concentration factor Kt will __________

A. increase
B. decrease
C. remain constant
D. cannot comment
Answer» B. decrease
Discussion
3.

An elliptical hole in a plate as shown in the figure. The value σmax= σϴ = __________

A. \(\sigma\theta=\frac{\sigma}{2}(1+\frac{a^2}{r^2})-\frac{\sigma}{2}(1+3\frac{a^4}{r^4})cos2\theta\)
B. \(\sigma\theta=\frac{\sigma}{2}(1+3\frac{a^4}{r^4})cos2\theta\)
C. \(\sigma\theta=\sigma(1+2\frac{a}{b})\)
D. \(\sigma\theta=\sigma(1+2\frac{a^2}{b^2})\)
Answer» D. \(\sigma\theta=\sigma(1+2\frac{a^2}{b^2})\)
Discussion
4.

The value of stress concentration for circular hole in a plate subjected to uniform stress of σ is equal to ________

A. 1
B. 4
C. 3
D. 10
Answer» D. 10
Discussion
5.

A rectangular plate has circular hole in center as shown in the figure. There are 4 points located in the plate, find out the point where localized stress will be maximum.

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
6.

The stress concentration is generally expressed by a theoretical stress-concentration factor kt. Generally, Kt is described as the ratio of _________________

A. σmax / σmin
B. σmin/ σmax
C. σmax/σnominal
D. σnominal/σmax
Answer» D. σnominal/σmax
Discussion