API-571 Exam - Topic 1 Question 89 Discussion

Actual exam question for API's API-571 exam

Question #: 89
Topic #: 1

For some materials such as titanium, carbon steel and low alloy steel, the number of cycles to fatigue fracture decreases with ________ until an endurance limit is reached. Below this endurance limit, fatigue cracking will not occur, regardless of the number of cycles.

ATemperature increases

BStress endurance

CPressure decreases

DNone of the above

Show Suggested Answer

Suggested Answer: B

by Eve at Jun 20, 2024, 12:53 AM

Limited Time Offer

25%

Off

Get Premium API-571 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Colton

9 months ago

Nah, I think it's more about temperature increases.

upvoted 0 times

...

Elenore

9 months ago

I've read that too, endurance limit is crucial for fatigue.

upvoted 0 times

...

Belen

9 months ago

Wait, are we sure about that? Sounds a bit off.

upvoted 0 times

...

Sanjuana

10 months ago

Totally agree, stress endurance is key here!

upvoted 0 times

...

Lorriane

10 months ago

It's definitely stress endurance that affects fatigue cycles.

upvoted 0 times

...

Latricia

10 months ago

I’m really uncertain about this one. I remember endurance limits, but I’m not clear on how temperature or pressure plays into it.

upvoted 0 times

...

Tarra

10 months ago

I practiced a similar question where we talked about fatigue limits, and I think it was about stress endurance. That seems to fit here too.

upvoted 0 times

...

Boris

10 months ago

I feel like we discussed endurance limits in class, but I can't recall if it was specifically about temperature increases or something else.

upvoted 0 times

...

Nadine

10 months ago

I think the answer might be related to stress endurance, but I'm not completely sure. I remember something about how materials behave under different stress levels.

upvoted 0 times

...

Kristin

10 months ago

I'm a bit confused by the wording of this question. I'll need to review my notes on fatigue fracture before deciding on the answer.

upvoted 0 times

...

Carin

10 months ago

I'm not totally confident, but I'm leaning towards B since the question mentions an "endurance limit" which sounds like it's related to stress.

upvoted 0 times

...

Delsie

10 months ago

Okay, let me see. I remember learning that fatigue fracture is related to stress, so I'm going to go with B.

upvoted 0 times

...

Jessenia

10 months ago

Hmm, I'm a bit unsure about this one. I'll need to think it through carefully before answering.

upvoted 0 times

...

Penney

11 months ago

This question seems straightforward, I think the answer is B - stress endurance.

upvoted 0 times

...

Gary

11 months ago

This seems like a pretty straightforward question, I should be able to figure this out.

upvoted 0 times

...

Kristian

11 months ago

Whoa, so many numbers and variables to keep track of. I better re-read the question a few times to make sure I understand all the details before trying to solve it.

upvoted 0 times

...

Erick

11 months ago

I'm a little confused by this question. There seem to be a few options that could potentially be barriers, but I'm not sure which two are the best fit. I'll have to carefully analyze each one.

upvoted 0 times

...

Tayna

11 months ago

Hmm, this looks like a straightforward question about the recognizeText command. I think the answer is B - Doc, PDF, Blob.

upvoted 0 times

...

Juan

11 months ago

I practiced a similar question, and I remember that Windows 8.1 was mentioned as being supported for AAD.

upvoted 0 times

...

Fairy

1 year ago

The endurance limit is a critical concept, but I'm still feeling a bit fatigued from all the studying. Guess I'll have to power through this one!

upvoted 0 times

Jeanice

1 year ago

C) Pressure decreases

upvoted 0 times

...

Shawna

1 year ago

B) Stress endurance

upvoted 0 times

...

Carman

1 year ago

A) Temperature increases

upvoted 0 times

...

Paul

1 year ago

Hmm, this one's tricky. I'll have to think it through carefully. Maybe I'll just guess and hope for the best.

upvoted 0 times

Brandon

1 year ago

User 3: I'll take a guess and say D) None of the above.

upvoted 0 times

...

Floyd

1 year ago

User 2: I'm not sure, but I'll go with B) Stress endurance.

upvoted 0 times

...

Alona

1 year ago

User 1: I think it might be A) Temperature increases.

upvoted 0 times

...

Nieves

1 year ago

Haha, this question is a piece of cake! Of course, it's B. Stress endurance. Who doesn't know that?

upvoted 0 times

...

Mary

1 year ago

I'm not sure, but I think it might be B) Stress endurance, as higher stress levels can also contribute to fatigue failure.

upvoted 0 times

...

Joanne

1 year ago

I'm going with D. None of the above. The question is asking about what the number of cycles decreases with, not what happens below the endurance limit.

upvoted 0 times

Pamella

1 year ago

User 2: I disagree, I'm going with B) Stress endurance.

upvoted 0 times

...

Georgene

1 year ago

User 1: I think it's A) Temperature increases.

upvoted 0 times

...

Ronnie

1 year ago

Option A seems correct to me. As temperature increases, the material's resistance to fatigue decreases, leading to a lower number of cycles to failure.

upvoted 0 times