Interview Questions & Answers for Automobile company...Part 1



  • What happens if gasoline is used in a Diesel engine?Diesel engine will work ?
No, It will not work,as the Compression ratio of Petrol engine is 6 to 10 & that of Diesel engine is 15 to 22. Thus on such high compression, gasoline gets highly compressed & it may blast.
  • Which Mechanism is used in Automobile gearing system
Differential mechanism
  • Why different types of sound are produced in different bikes though they say run on SI engine
Engine specifications are different in different manufactures like as Bore Diameter(CC), Ignition timing.Also the exhaust passage take more responsible for sound.
  • Why entropy decreases with the increase in temperature?
ds=dQ/TEntropy is inversely proportional to the temperature so.as temp. increases,entropy decreases.
  • 1 hp how much watt?

    746.2Watt

    • How to calculate bearing number to diameter of the inner and outer

    Divide the shaft diameter size by 5, it will give last two digitof the bearing no. and according to type of load we have tochose the type of bearing and that will give prior no. ofthe bearing.

    • Explain Bicycle rear wheel Sprocket working?

    Rear wheel sprocket works under the principle of ratchet and pawl.
    • Definition of Octane number & Cetane number
    Octane No.- Octane number is defined as the percentage, by volume, of iso octane in the mixture of iso octane and h-heptane. It is the measure of rating of SI engine.
    Cetane No.- Cetane number is defined as the percentage, by volume, of n-cetane in the mixture of n-cetane and alpha methyl naphthalene. It is the measure of rating of CI engine.
    • Poisons ratio is higher in (rubber/steel/wood)
    When a material is compressed in one direction, it usuallytends to expand in the other two directions perpendicular tothe direction of compression. This phenomenon is called thePoisson effect. Poisson’s ratio is a measure of the Poisson effect.
    For rubber = 0.5
    For steel = 0.288
    For wood < 0.2
    Thus Poisson’s ratio is higher in RUBBER.
    • The Fatigue life of a part can be improved by ?
    Improving the surface finish by Polishing & providing residual stress by Shot peening.
    • When crude oil heated Which Hydro carbon comes first?
    Natural gas(Gasoline)… at 20 Celsius
    • 1hp=how much rpm
    We need Torque to find out.
    Apply this formula:
    T = HP x 5252            rpm
    T = torque (in lb-ft)
    HP = horsepower
    5252 = constant
    rpm = revolutions per minute
    • which mechanism is used in automobile gearing system
    Differential mechanism
    ---------------------------------------------
    Click Here for Part 2

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19 April 2015 at 12:28 ×

E Chhattisgarh is a website for all information about Chhattisgarh's History, Tourism, Educations, Jobs, Exams & Results, General Knowledge, Chhollywood.
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11 August 2015 at 02:29 ×

Mechjobs.in is a website for Mechanical Jobs update, Interview Tips, Resume Format ant Industrial Knowledge etc....

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15 September 2015 at 01:16 ×

Nice post. thanks for shared with us, grey melange

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Kix Mr
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28 September 2015 at 18:55 ×

Tks very much for your post.

Avoid surprises — interviews need preparation. Some questions come up time and time again — usually about you, your experience and the job itself. We've gathered together the most common questions so you can get your preparation off to a flying start.

You also find all interview questions at link at the end of this post.

Source: Interview Questions & Answers:

Best rgs

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13 October 2015 at 20:08 ×

Tks very much for your post.

Avoid surprises — interviews need preparation. Some questions come up time and time again — usually about you, your experience and the job itself. We've gathered together the most common questions so you can get your preparation off to a flying start.

You also find all interview questions at link at the end of this post.

Source: Interview Questions & Answers:

Best rgs

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15 March 2016 at 05:59 ×

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For getting a good job

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30 March 2016 at 10:05 ×

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