Code No: R41037
R10
Set No. 1
IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec- 2014
AUTOMOBILE ENGINEERING
(Mechanical Engineering)
Time: 3 hours
Max. Marks: 75
1 a)
b)
c)
Answer any FIVE Questions
All Questions carry equal marks
**
What is supercharging? List different types of superchargers.
Explain about crank case ventilation.
List the advantages of four wheel drive over rear wheel drive.
[6]
[5]
[4]
2 a)
b)
c)
Describe Hotch-Kiss drive.
Explain any one type of centrifugal clutch with a neat sketch.
Explain the desirable properties of a tyre.
[5]
[6]
[4]
3 a)
b)
c)
What are the functions of an automobile steering system?
Discuss the relative merits and demerits of Davis steering gear mechanism.
Explain the following terms related to steering geometry:
i) steering axis inclination
ii) camber
iii) caster
[5]
[4]
4 a)
b)
Explain briefly the Mac Pherson strut type of front suspension.
List any five common brake troubles and discuss their causes and remedies.
[9]
[6]
5 a)
Describe the construction and working of bendix starter drive with the help of a
neat sketch.
Explain the principle of operation of a solenoid switch.
[10]
[5]
6 a)
b)
Explain any five safety systems that are used in an automobile.
Give the engine specifications of any one available transport vehicle.
[10]
[5]
7 a)
What are main pollutants in the engine exhaust? State the safe level of the
pollutants for cars according to Euro 4 norms. What is the exhaust emission
standards schedule in INDIA (Nation wide)?
Explain the engine modifications suggested to reduce the formation of
pollutants.
[7]
Describe the various methods of measuring bearing clearances.
How do you check the alignment of a camshaft?
Explain the checks to be made before fitting new piston rings.
[7]
[3]
[5]
b)
b)
8 a)
b)
c)
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[6]
[8]
Code No: R41037
R10
Set No. 2
IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec- 2014
AUTOMOBILE ENGINEERING
(Mechanical Engineering)
Time: 3 hours
Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
**
What are the functions of automobile lubrication system?
[3]
b)
Explain about dry sump lubrication system. What is its advantage?
[7]
c)
Explain about automobile power transmission system.
[5]
Explain the working of a constant mesh gear box.
[8]
Explain the half floating rear axle with a neat sketch.
[7]
What is center point steering? Explain.
[5]
Discuss any three common troubles that occur in steering system and mention
their remedies.
Describe Ackermann steering gear mechanism.
[6]
What are the functions of an automobile suspension system?
[3]
List the common troubles in the suspension system and discuss their causes
and remedies.
List different types of disc brakes. Describe any one type.
[6]
[6]
Explain how an electric horn works?
[7]
Explain the principle of working of Folo- thru bendix drive.
[8]
Explain about the following safety systems
i) Antilock braking system (ABS)
ii) Traction control system
iii) central locking system
Explain about different safety sensors used in automobiles.
[9]
[6]
1 a)
2 a)
b)
3 a)
b)
c)
4 a)
b)
c)
5 a)
b)
6 a)
b)
7
Explain different methods of treating automobile exhaust gases to reduce
pollutants.
8 a)
[4]
[15]
Discuss the general precautions to be observed during servicing of an engine.
[6]
b)
What is reboring of an engine cylinder? Describe the reboring procedure.
[6]
c)
How do you check the alignment of a camshaft?
[3]
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Code No: R41037
R10
Set No. 3
IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec- 2014
AUTOMOBILE ENGINEERING
(Mechanical Engineering)
Time: 3 hours
1 a)
b)
Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
**
List the different components of an automobile chassis and the mention the
function of each component.
[8]
Describe a wet sump lubrication system and mention its applications
[7]
2 a)
b)
c)
d)
What are the advantages of a synchromesh gear box?
What are the advantages of tubeless tyres?
Describe the fully floating rear axle with the help of a neat sketch.
What is the function of a propeller shaft?
[4]
[3]
[5]
[3]
3 a)
b)
What are the components of a steering geometry? Explain their functions.
Explain the following terms related to steering geometry:
i) toe in and toe out
ii) combined angle
iii) scrub radius
[9]
4 a)
b)
Describe the construction and working of a telescopic type shock absorber.
What are the advantages and disadvantages of hydraulic brakes?
[10]
[5]
5 a)
Enumerate the common troubles that occur in the starting system of an
automobile engine
Write short notes on (i) Engine temperature indicator (ii) oil pressure gauge.
[7]
[8]
Give the specifications for the engine of any one of the available cars.
[5]
b)
6 a)
b)
7 a)
b)
c)
8 a)
b)
c)
What are the active safety features of an automobile? Discuss about them in
detail.
[6]
[10]
What are the advantages and disadvantages of using CNG as alternative fuel for
automobiles?
What is catalytic converter? Explain about three-way converter.
State the safe level of the pollutants for cars according to INDIA 2000 norms.
[5]
[6]
[4]
List the major steps involved in the engine reassembly after overhauling.
Discuss the inspection procedure for engine crankshafts
When should an engine cylinder be honed?
[6]
[6]
[3]
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Code No: R41037
R10
Set No. 4
IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec- 2014
AUTOMOBILE ENGINEERING
(Mechanical Engineering)
Time: 3 hours
Max. Marks: 75
Answer any FIVE Questions
All Questions carry equal marks
**
1 a) What are the different components used in engine lubrication system and
explain their functions.
[6]
b) Discuss about dry sump lubrication system. Also mention its advantages.
[9]
2 a) What is fluid flywheel? Explain its construction and working.
b) What is an over drive? Explain its construction and operation.
[9]
[6]
3 a) Sketch and explain Davis steering gear mechanism.
b) What are different types of steering gears? Describe any one of them.
c) Explain why king pin axis inclination is provided?
[5]
[6]
[4]
4 a) What are the advantages of front independent suspension?
b) Explain independent front suspension system with torsion bar.
c) Describe the construction and working of the tandem master cylinder.
[3]
[5]
[7]
5 a) What is the purpose of cut out relay? Explain briefly its construction and
operation?
b) Explain briefly the construction of a headlamp?
6 a) How do you mention the engine specifications for an automobile?
b) Describe the constructional features and working details of a safety belt.
c) What is the objective of using air bag in automobiles? What are different types
of air bags?
7 a) Explain the function of an adsorber in the automotive emission control.
Describe types of adsorbers in use.
b) Describe the remote sensing system for emission measurement of a moving
vehicle.
c) State the safe level of the pollutants for cars according to American federal
standards.
8 a) What are the precautions to be taken to remove valves of an automobile
engine? What the checks to be made on the engine valve to decide for valve
replacement?
b) Give the check list for cylinder bore and discuss the procedure for repair in
case cylinder wear is found to be more than permissible limits.
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[10]
[5]
[5]
[6]
[4]
[6]
[5]
[4]
[7]
[8]