Why are manhole covers round?
Submitted by: AdministratorThis is a classic brainteaser, which was reportedly first asked by a Microsoft interviewer. Here's how to ""solve"" this brainteaser (remember to speak and reason out loud while solving this brainteaser): Why are manhole covers round? Could there be a structural reason? Why aren't manhole covers square? It would make it harder to fit with a cover. You'd have to rotate it exactly the right way.
The pipes below are also round, so fitting them might be easier, as might be making them. So many manhole covers are round because they don't need to be rotated. There are no corners to deal with. Also, a round manhole cover won't fall into a hole because it was rotated the wrong way, so it's safer. Looking at this, it seems corners are a problem. You can't cut yourself on a round manhole cover. And because it's round, it can be more easily transported. One person can roll it.
Submitted by: Administrator
The pipes below are also round, so fitting them might be easier, as might be making them. So many manhole covers are round because they don't need to be rotated. There are no corners to deal with. Also, a round manhole cover won't fall into a hole because it was rotated the wrong way, so it's safer. Looking at this, it seems corners are a problem. You can't cut yourself on a round manhole cover. And because it's round, it can be more easily transported. One person can roll it.
Submitted by: Administrator
Read Online Preservation Inspector Marine Equipment Job Interview Questions And Answers
Top Preservation Inspector Marine Equipment Questions:
☺ | What have you done to improve your knowledge As Preservation Inspector Marine Equipment in the last year? |
☺ | Why are manhole covers round? |
☺ | Can you describe your ideal boss/supervisor? |
☺ | Can you explain why you changed career paths As Preservation Inspector Marine Equipment? |
☺ | What do you think is your greatest weakness? |
Top Quality Assurance Categories
☺ | Inspector Quality Assurance/QC Interview Questions. |
☺ | Site Supervisor Interview Questions. |
☺ | Field Monitoring Supervisor Interview Questions. |
☺ | Quality Center Interview Questions. |
☺ | Officer Quality Control Interview Questions. |