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080190008 - Automotive Fuels and Lubricants May/June 2013 Question paper (Type Versi
#1


Anna University , Coimbatore
B.E/B.TECH. DEGREE EXAMINATION, MAY/JUNE 2013
Fifth Semester
Automobile Engineering
080190008-AUTOMOTIVE FUELS AND LUBRICANTS
(Regulation 2008/2010)


Degree : B.E./B.Tech

Year : III

Semester : 05

Branch : Auto

Subject Code : 080190008

Subject Name : Automotive Fuels and Lubricants

Type : May/June 2013 Question paper

Content Details : 080190008 - Automotive Fuels and Lubricants May/June 2013 Question paper (Type Version)


B.E/B.TECH. DEGREE EXAMINATION, MAY/JUNE 2013
Fifth Semester
Automobile Engineering
080190008-AUTOMOTIVE FUELS AND LUBRICANTS
(Regulation 2008/2010)

PART A-(10*2=20 marks)
1.State the purpose of adding additives in a lubricant.
2.What are the advantages of gaseous fuel.
3.Draw the chemical structure of methane and ethane.
4.Give the composition of Gasohol.
5.What do you mean by dry analysis?
6.What is the reason for adding KOH solution in the orsat apparatus?
7.What is viscous friction?
8.List out the various frictional losses in an engine.
9.What is the purpose of antioxidants?
10.Define viscosity index.

PART B-(5*16=80 marks)
11.(a) Give the general chemical formula of the following fuels
(i) Paraffin
(ii) Olefin
(iii) Diolefine
(iv) Napthene
(v) Aromatic
Also explain their molecular arrangement.
Or
(b) What is the composition of crude oil? Explain the principle involved in fractional
distillation of crude oil. Mention the various fractions obtained in this process and their
industrial uses.

12.(a) Explain the important qualities of SI engine fuels.
Or
(b) Describe with neat sketch the following calorimeters used for determination of heating
values.
(i) Bomb calorimeter
(ii) Junkers gas calorimeter


13.(a) Enumerate the method by which air-fuel ratio can be calculated when analysis of
combustion product is known.
Or
(b) Calculate the amount of theoretical air required for combustion of 1 Kg of acetylene
(C2H2) to Co2 and H2O .

14.(a) What are the various components to be lubricates in an engine and explain how it is
accomplished.
Or
(b) Clearly explain the various wet sump lubrication system. Compare the wet sump and dry
sump lubrication system.

15.(a) What are the various desired properties of a lubricant and explain how do additives help
to achieve the desired properties.
Or
(b) List out the desirable properties of lubricants and explain them in detail.
 



"Good Decision comes from Experience"
But,
"Experience comes from Bad Decision"

                                                                                      -Abdul Kalam




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