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Carrier Question
My name is Surya and I recently completed my b.tech in mechanical engineering as a fresher I have so many
roots to start my Career in the relevant field .In that I have selected some opportunities and has
1) In design field
2) In Power Plants Construction Field
3) In QC i.e in pipe inspection and testing field
...plz suggest me which one has good future in... -
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Pig Iron
What is the percentage of carbon present in pig iron?
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Pump compressor turbine blower
Rotating equipment
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Sigma comperator optical systems
Explain about calibration method of sigma comparator optical systems ?
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Pully Size
How to found pully size? how many type off pully? why we used pully?
subrat
- Oct 9th, 2014
Pulley is used for torque transmission from one shaft to another shaft .. If the shafts are parallel to each other. We use pulley for easy to transfer torque through the belt or chain.. Thank you
vrsaikumar
- Nov 4th, 2008
Uses: Pulleys are one of the types of transmission devices which are used for transmitting power from 1 shaft to another shaft with the help of belts of ropes. Types of pulleys: 1. Cast iron pulleys2...
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Ss 316 specification of hardness
how many 5 m dia hardness in bhn of 316 material we are facing the problem in machining & tolling not work properly
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Lathe and Milling Machines
What is the difference between lathe & milling machine? What are the operations that we cannot perform in lathe but milling?
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Calculating Heat transfer through a Cylinder
How do you calculate the heat transfer thorough a cylinder with lower temperature on the bottom than on the top. the temperature of the ambient is 20 deg C, inside is 77 deg K, the bottom disk is 5 deg C. what would be the temp on the top?
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Petrol Engine
What happen if we pour petrol in diesel engine and vice versa? Explain
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Editorial / Best Answer
richa tiwari- Member Since Aug-2009 | Aug 30th, 2009
When petrol is used in diesel engine, the engine will not work as gasoline (petrol) has high ignition temperature and therefore has to be ignited by spark-ignition. Diesel engine on the other hand works on the principal of self-ignition in compressed fuel?which?is not possible with petrol.
When diesel is used in petrol engine, there will be sudden combustion in the fuel due to spark ignition? bcoz diesel has low ignition temperature. This will lead to high knocking, which is absolutely undesirable.kamlesh431
- Jul 24th, 2014
The compression ratio of petrol engine is 10:1 to 14:1 and for diesel engine is 16:1 to 22:1. If petrol is poured in diesel engine a blast may happen at this high compression ratio. So we cant use pe...
richa tiwari
- Aug 30th, 2009
When petrol is used in diesel engine, the engine will not work as gasoline (petrol) has high ignition temperature and therefore has to be ignited by spark-ignition. Diesel engine on the other hand wo...
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SI and CI Engine
Why we use Petrol in SI Engine & Diesel in CI Engine
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hosam_ozo- Member Since Apr-2010 | Aug 8th, 2010
First thing you have to know is what is called cetane and octane number.
The octane number is the percentage of octane in the mixture of fuel
The centane number is the percentage of cetane
The octane number expresses the self ignition temperature, as this no. increases the self ignition temperature increases too and this make the knock to be avoidable and the cetane no. is vice verse**Octane no. increase self ignition increase and cetane no decrease"" SIE needs high octane no"
**Cetane no increase the octane no decrease and the self ignition temperature decrease" CIE needs this"Case 1: SI engine we dont want the Self Ignition to be reached we use a fuel have a high octane to avoid the knock "which damage the engine"
Case 2: CI the compression ratio is too high "12:22" and this kind of engine depends essentially on the self ignition temperature so we use a fuel with high cetane no "low octane" as the high cetane "low octane" gives low self ignition temperature and that is we need in the CIE..
ABHIJAY
- Jul 10th, 2014
Si engines means spark ignition engines. With the help of spark plug, spark is produced in engine cylinder. Before this process occurs, mixture of air and fuel entered in engine cylinder during s...
PRAVIN KAD
- Aug 9th, 2011
Si engines means spark ignition engines. With the help of spark plug, spark is produced in engine cylinder. Before this process occurs, mixture of air and fuel entered in engine cylinder during suctio...
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Tractor Wheels
Why is the rear wheel of tractor larger than its front wheel?
Srinivas pilla
- May 20th, 2014
You know tractor takes less space in turnings than other vehicles like buses lorries that's why it has large space at the rare it provides best turning and more secure my advice please watch a tractor while it takes turn try. u know
akash.2929
- Aug 7th, 2009
1. Bigger wheel - more radius hence more torque.2. Bigger base - for farming over fields, to reduce pressure.The front wheels are not changed to avoid unnecessary cost. Even in big carrier trucks one ...
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Reverse Engineering
In relation to Solid Modeling Concepts, Explain what do you mean by Reverse Engineering
amar
- Apr 12th, 2014
Reverse engineering is the process of making a cad model of the physical component...this model is then modified or added with new features for improvements..
iamthebest_askme
- Feb 19th, 2009
It is a process in which a already engineered product is redesigned from its actual form that is by measuring the actual physical model and created again, mainly b,cos off--1> straight forward copying...
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Speed and Torque
What is the practical difference Speed and Torque?
shank
- Dec 7th, 2013
The first cyclist gives his force alone but, the second cyclist gives his force with addition to the rider behind him.so, the second cyclist have the tendency to give more torque than first cyclist.
bhargavmech
- Aug 20th, 2009
speed is the distance traversed per unit time.. it is a scalar quantity. torque is the vector product of distance and force..it is a vector quantity. torque= r * F where r is distance between point of...
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Mechanical Engineering Interview Questions
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