Interested to Buy Any Domain ? << Click Here >> for more details...
why I-sections are considered to be stronger one than any
other ?
how does a ship floats?
- 16 Answers
- 49837 Views
- HCL, Merchant Navy, Titan, I also Faced
- E-Mail Answers
Answer Posted / kschari
Yes 'I 'sections are having more moment of inertia( second moment of inertia),hence bending movement is more .That is why 'I' sections are more stronger than rectangular sections which are having equal area of cross section. Here important point is area of cross-section. If we take two beams of one I section and the other rectangular section of same height and same width , the rectangular section is stronger because the area of cross section is more but the weight(which increase cost) is also more,Hence it should be clear the 'I'sections are stronger compared to other sections which are having same height , width and area of material cross section. This is because of moment of inertia=b*h*h*h/12.
Although ships are made of materials that are much denser than water, the density of a ship itself is its total weight (including, cargo, bunkers, stores, crew, etc.) divided by the external volume of the hull. This means that the hull must have an external volume that is big enough to give the whole ship a density that is just less than that of the water in which it floats. Ships are therefore designed to achieve that. Much of the interior of a ship is air (compared with a bar of steel, which is solid), so the average density, taking into account the combination of the steel, other materials and the air, can become less than the average density of water.
That is why the ship floats in the see. this is nothing but buoyance principle i.e the weight of the water displaced by the ship should be more than the weight of the ship
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
what is the exams to be conducted for mechanical engineers and then how to prepare that
how to check quality of steel?
I am a technical graduate with 2 years of experience in automobile industry. i want to prepare for air force technical level examination. will u pls tell me what is the syllabus or do u have some model question papers???
How to calculate CFM in Compressure or Blower? EX. I hv Blower with 5hp motor.then how to calculate the CFM?
difference between internal energy and enthalpy?
on which date sail exam is held & what the criteria for this exam
hi,i am sekar.i am prepareing Assistant Motor Vehicle Inspector in TN.Transport ,if any one have previous year model pares or some questions,pls send me at gpsekar2007@gmail.com.
Explain the advantages of gear drive?
dear sir, pls provide me a previous paper for hpcl engineers trainee exam for mechanical engg. this is a request pls do the needful as early as possible.
Why the electric motor of a fan with backward curved blades is never got overloaded under any condition ?
pls any one send me the last 5 years rrb QP - hari.devarajan@gmail.com
write 2 important assumption on fin theory?
What is the world is hardest metal?
How to find the amount of natural gas required to produce 1kwhr of energy?
Can we add different application (program)in pro e modelling software? If YES ,then how????????
