B.Tech. (AE) (Sem.-6)
AUTOMOTIVE ELECTRONICS
MICROCONTROLLERS
Subject Code : AE-31O
Paper ID : [Ao723]
Time: 3 Hrs. Max.
Marks: 60
INSTRUCTION TO CANDIDATES
1. SECTION-A is COMPULSORY consisting of TEN
questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying
FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions
carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
1. Write briefly
(a) A p-n junction diode is Similar to a fluid Check
valve. Comment.
(b) A memory chip has 8 data lines and 16 address
lines. What is its size in bytes?
(c) How does a microcontroller differ from a
microprocessor?
(d) What are the different engine operating modes that
affect fuel control?
(e) List the sensors which are used for measuring
various engine parameters in digital engine control system.
(f) How does electronic transmission controller
determine the desired gear ratio?
(g) What is the primary purpose of spark timing
controls?
(h) What do you understand by a fully-locked tyre?
(i) How does a cruise control system control vehicle
speed?
(i) What is the function of timing light in automobile
diagnostics?
SECTION-B
2. With the help of a block diagram, briefly discuss
the architecture of an Intel 8051 microcontroller.
3. Discuss the working of any one type of engine
crankshaft angular position sensor.
4. Discuss the input and output variables which are
measured and controlled respectively in the electronic engine control system.
5. How does anti lock braking system assist a driver
in decelerating the vehicle under poor braking conditions?
6. List the input and output parameters and discuss
generic control strategy for electronic suspension control systems.
SECTION-C
7. With the help of a block diagram, discuss the
components and working of an electronic fuel control system.
8. Discuss the functioning and advantages of an
electronic steering control system. How is it different from traditional power
steering systems?
9. What is a Hybrid Vehicle? What is difference
between series hybrid vehicle and parallel hybrid vehicle? Discuss how power to
the drive wheels of a hybrid vehicle is controlled and transmitted
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