B.TECH(AUTOMOBILE EN GG.), 2014
AUTOMOTIVE ELECTRONICS & MICROCONTROLLERS
PAPER CODE: AE 310
PAPER ID:[Ao7231]
MAXIMUM MARKS: 60 TIME
ALLOWED: 3 HOURS
SECTION – A
Q 1. Answer the following. Each part carries 2 marks.
(a) Why is an operational amplifier used in inverting
mode? How does its gain differ from that of a non-inverting amplifier?
(b) A microprocessor uses eight address lines for
accessing memory. What is the maximum number of memory locations that can be
addressed?
(c) What is the purpose of ALE pin connection in 8051
microcontroller?
(d) What is the difference between ‘direct injection’
and ‘indirect injection’ in SI engines?
(e) Why does an electronic ignition system have a
longer life than the conventional electrical systems?
(f) What are the advantages of using electronic
transmission management system in automobiles?
(g) How is variable damping achieved in electronically
controlled shock absorbers?
(h) How does ABS prevent skidding of automobiles? Does
it ensure proper braking during turning also?
(i) List the various common components of antilock
braking system and traction control system.
(i) What is the role of an immobilizer in an
automobile security system?
SECTION – B
Note: Attempt any four questions. Each question
carries 5 marks.
Q 2. With the help of a neat sketch explain the
construction and operation of a typical oxygen sensor used in vehicles.
Q 3. Write a short note on CAN bus communication usage
in automobiles.
Q4. Discuss the construction and working of a diode
and a thyristor. What is the difference between the two devices?
Q 5. What is an injection timer? Explain its
functioning in diesel fuel supply systems.
Q 6. Discuss the advantages of electric vehicles over
the conventional vehicles running on fossil fuel.
SECTION – C
Note: Attempt any two questions. Each question carries
10 marks.
Q 7. Discuss the components and working of traction
control system? How is it different from anti-lock braking system?
Q 8. Explain the working of electronic petrol
injection systems used in modern cars, discussing the roles of sensors,
injectors and engine control unit.
Q 9. What are the various modern shift control
techniques available in modern cars? How do they differ from automatic
transmission systems?
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