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 Dumper Surface Coal Mining Job Interview Questions And Answers
Top Dumper Surface Coal Mining Questions:
| ☺ | You have a project due in one hour but a more important emergency that affects business needs to be fixed immediately, what do you do? |
| ☺ | Give me a specific example of a time when you had to conform to a policy with which you did not agree? |
| ☺ | What will your ramp time be before you become a meaningful contributor? |
| ☺ | Have you ever been fired and if yes, why? |
| ☺ | How do you act when you encounter competition? |
Top Construction Job Categories
| ☺ | Draftsman Interview Questions. |
| ☺ | Rigger /Technician Interview Questions. |
| ☺ | Construction Safety Interview Questions. |
| ☺ | Production Supervisor Interview Questions. |
| ☺ | Real Estate Analyst Interview Questions. |
