Explain how the carburetor supplies the required fuel air mixture when the vehicle wants to over take another vehicle? What are the problems with carburetors in extreme cold climatic regions? How to overcome these problems?
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2.a)
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III-B.Tech.II Semester Supplementary Examinations, December 2002/January 2003 AUTOMOBILE ENGINEERING (common to Mechanical Engineering, Production Engineering, Mechatronics and Mechanical Manufacturing Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE questions All questions carry equal marks --1.a) What are the types of power transmission in an automobile. b) Explain the four wheel drive mechanism with the help of diagram.
Explain the reason for cooling an IC engine. What are the various characteristics of an efficient cooling system. Draw a sketch of cooling water passages and name the various parts.
4.a) b)
Briefly discuss the various factors which will affect the ignition timing. Briefly discuss the main factors before deciding the optimum firing order of an engine.
5.a)
Explain the necessity of employing a temperature compensator in the generator regulators. Write a comprehensive note on starting motor control switches.
b)
Explain the functions of a gear box in an automobile. Discuss the various types of gear boxes used in automotive vehicles. With the help of a neat sketch, explain the construction and operation of a sliding mesh gearbox.
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6.a) b) c)
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3.a) b) c)
Indicate the different types of steering linkages. Describe with the help of a neat sketch, the working of Cam and Double roller Steering gear.
8.a)
What are the essential characteristics required of a good braking fluid. Give complete details. Describe briefly the construction and working of Hydraulic brake system.
Aj
7.a) b)
b)
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Set No.
2
Code No.:320303
.in
III-B.Tech.II Semester Supplementary Examinations, December 2002/January 2003 AUTOMOBILE ENGINEERING (common to Mechanical Engineering, Production Engineering, Mechatronics and Mechanical Manufacturing Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE questions All questions carry equal marks --1.a) Draw the layout of an four wheeler automobile and indicate various components. b) What do you understand by work ‘decarbonisation’.
Explain the constructional features of any modern carburetor. Suggest and describe a method of petrol injection system suitable for a passenger car engine.
3.a) b)
Explain the types of cooling system and compare them. Sketch and explain the following: (i) Thermosython system (ii) Forced cooling system.
4.a)
What are the important requirements of high voltage ignition source for the spark ignition process. Sketch and explain the working of capacitor in the ignition system.
5.a) b)
6.a)
With the help of a neat sketch, explain the construction and operation of a constant mesh gearbox. What do you mean by double-declutching? Explain how and why it is done? Why do commercial vehicles need more than three forward speeds?
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b) c)
How do you control the generator output in the automobiles. Explain the third brush control. Discuss the construction and working of a combined vibrating voltage and current regulator with a simple sketch.
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b)
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2.a) b)
What do you understand by backlash in steering gears? Sketch and explain the construction and working principle of the Recirculating Ball type steering gear.
8.a) b)
Explain clearly the requirements of automobile brakes. Discuss the construction and working details of the Tandem master cylinder.
Aj
7.a) b)
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Set No.
3
Code No.:320303
.in
III-B.Tech.II Semester Supplementary Examinations, December 2002/January 2003 AUTOMOBILE ENGINEERING (common to Mechanical Engineering, Production Engineering, Mechatronics and Mechanical Manufacturing Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE questions All questions carry equal marks --Explain about front wheel drive with the help of neat sketch. What are the pollutants emitted by an automobile?
2.a)
Which type of petrol pump is most commonly used in modern cars. Describe its functioning. Explain how the variation of the strength of air fuel mixture is accomplished in modern carburetors.
b)
3.a) b)
or ld
1.a) b)
Explain the following with neat sketches. (i) Evaporating Cooling System (ii) Pressure Cooling System. Name the components of cooling system and explain indetail the components. Explain the term Mordern Ignition Systems and mention the types. Explain with a neat sketch the working of Transistorized coil system and name the various parts.
5.a) b)
Discuss about the torque and speed requirement for engine starting. Explain clearly the over running clutch drive type-starting mechanism with a neat sketch.
6.a) b)
Explain the constructional aspects of an automobile propeller shaft. Give the functions of the universal joints. Why two universal joints are provided one on each end of the propeller shaft. Explain the functions of the differential in an automobile.
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c)
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4.a) b)
State the principle and derive equation for correct steering of a vehicle. Sketch and explain Ackermann steering mechanism.
8.a) b)
What is the principle on which hydraulic brakes work. With the help of a sketch, explain the function of the various parts of master cylinder.
Aj
7.a) b)
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Set No.
4
Code No.:320303
.in
III-B.Tech.II Semester Supplementary Examinations, December 2002/January 2003 AUTOMOBILE ENGINEERING (common to Mechanical Engineering, Production Engineering, Mechatronics and Mechanical Manufacturing Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE questions All questions carry equal marks --Give the detailed classification of automobiles with respect to different purposes. What are the effects of noise on human beings.
2.a)
How the fuel level in the float chamber of a carburetor is maintained at constant level. How the control of quantity of diesel injection is accomplished in a jerk type pump?
b)
3.a) b)
or ld
1.a) b)
Describe with a neat sketch the working of air cooled system and what are its applications? Discuss the following: (i) Cooling fins (ii) Baffles. Explain with a neat sketch of capacitance discharge ignition system. Discuss the effect of spark advance on pressure-crank angle diagram.
5.a) b)
Sketch and explain the circuit diagram of a charging system in an automobile. Explain the Bendix drive starting mechanism with neat sketch.
6.a) b) c)
Explain the constant velocity universal joint with a sketch. What is the purpose of a slip joint in a propeller shaft. What are the two purposes that the final drive serve? Explain.
7.a) b)
How does castor help to produce directional stability. Describe with the help of a neat sketch, the working of a power steering unit.
8.a) b)
What are the differences between Mechanical and Hydraulic brakes. Draw a simple wheel cylinder, explain its construction and working principle.
c) With the help of a neat sketch, explain the construction and operation of a sliding ... c) Why do commercial vehicles need more than three forward speeds?
List out the practical considerations to be checked for continuous gas ... Explain how silica analysis is done in boiler water of power plant. 3. a) What is meant by ...
What do you understand by principles of planning a building? Prepare a typical · aspect diagram for the area where direction of prevailing breeze is from North-.
b) Draw the circuit diagram of 4-bit Johnson counter using D-flip flop and explain .... 6. a) Compare merits and demerits of ripple and synchronous counters.
Given: turbine diameter = 120m and turbine operating speed = 40 rpm at · maximum efficiency. Propeller type wind turbine is considered. 4. a) What is the basic ...
Obtain an expression for unit speed, unit discharge and unit power for a turbine. 2. a) What do you understand by air vessels? Explain with a neat sketch.
1.a) Obtain the expression for the resistance and capacitance for gas system. ... List various variables to be measured and controlled in nuclear power plant.
instructions at the beginning and end of this set of code in order to switch .... 5.a) Write an assembly language program that will examine an ASCII string of 100.
If the analog i/p voltage is +6.85 v, what will be the R-2R ladder · o/p voltage when ... b) Design a ramp generator using 555 timer having an output frequency of.
efficiency of the cycle and mean effective pressure for the cycle. ... b) Calculate the heat flux emitted due to thermal radiation from a black surface at · 6000.
8.a) Write a note on creep resistant materials. b) Explain all the ... b) Sketch the creep diagram, and explain the various stages of creep. @@@@@. Set No. 2.
What is the difference between radio compass and ADF? Explain the principle · and operation of Automatic direction finder. 6. Define analog and digital ...
endurance limit of a metal. b) What are the factors which affect the fatigue strength of materials? 7. a) What is creep? Draw an ideal creep curve and explain the ...
(i) Band Rate · (ii) Request Filter ... 3. a) Write the comparison between teleprinters and CRT terminals. b) What are the ... What savings does it offer? b) What is a ...
b) How does butadiene differ from isoprene? 4.a) Describe about the synthetic fiber industry in India. b) Write, with an example on each of the following.
graph. b) Draw the state space tree for m-closing graph using a suitable graph. 8. Present a program schema for a FIFO Branch & Bound search for a Least-Cost.
b) Explain the effect of Metallurgical variables on fatigue properties · 7.a) Explain Ductile to Brittle transition phenomenon. b) Compare charpy with Izod impact testing. 8.a) What is stress relaxation. Draw stress-strain curves for ductile and brit
Information Technology, Electronics and Control Engineering, Electronics and ... Computer Engineering, Computer Science and System Engineering) ..... Draw and explain the logic diagram of a master slave D flip-flop using Nand gates. ###.
Chemical Engineering, Mechatronics, Metallurgy & Material Technology, · Aeronautical ... b) What is cache memory? Where is it placed? What is its .... 7.a) Explain the steps involved in computing the coefficients of the regression · polynomial.
b) Classify the blast furnace stoves. What are the different values in the stove and · their functions? 3.a) What factors affect reducibility of iron ores? Discuss them.
1.a) Write the name of places for occurance of iron ores in India. b) Explain the process of either Sintering or Pelletizing. 2.a) Explain hearth, tuyeres, stack with ...
