Bangalore University 2008 M.C.A Computer Aplications Embedded System - Question Paper
Bangalore University exam 2008
FIFTH SEMESTER M.C.A. DEGREE EXAMINATIONJANUARY 2009
(Y2K5 SCHEME)
ELECTIVE PAPER-5E5B: EMBEDDED SYSTEMS Time: 3 Hours Max. Marks: 80
Note: Answer any FIVE full questions choosing at least TWO questions from EACH PART
PART-A
1. a) Distinguish between Microprocessor and Microcontroller in detail. 08 b) Describe the process of converting a C program into the file for ROM image 08
2. a) Explain the essential characteristics of a processor structure in detail. 08 b) What is DMA and explain with a neat diagram. . 08
3. a) Explain the 3 modes of serial communication synchronous, iso-synchronous
and Asynchronous from the serial device with one example each. 08
b) Mention the different buses used for networking of serial devices? Explain the
CAN bus with the control field. . 08
4. a) What are virtual devices? Explain by comparing with the physical device. 08 b) Draw the architectural block diagram of PIC or MC68HC11 Microcontroller i
and pin diagram with explanation. 08
PART-B
5. a) What are the programming models for event controlled or response time
controlled real time programs. Explain FSM model with an example. 08
b) Discuss the various issues in modeling the processing of instruction in
multiprocessor systems 08
6. a) Explain in detail process, task and threads. 08 b) What do you mean by inter process communication? How does a mailbox
Pass-a message tiuringanlPC?------_Q8_
7. a) When do we need an RTOS, and mention the different services provided
by RTOSs. 08
b) Discuss different scheduling models used by RTOS. i 08
8. Write Short Notes on the following: .4x4=16
a) ISA and USA buses
b) Petri net model
c) Priority Inversion problem
d) Virtual sockets.
SN -1732
I Semester B.Sc. Examination, November/December 2008 (Semester Scheme) ELECTRONICS-I Electronic Fundamentals
Time : 3 Hours Max. Marks : 60
Instruction: Answer any five questions from Part-A, four questions from Part-B and any five subdivisions from Part-C.
PART - A
Answer any five questions : (6x5=30)
1. a) Distinguish between passive and active components. Give example.
b) Obtain an expression for the energy stored in a capacitor. (3+3)
2. a) Explain how the voltage, time period and frequency of an ac signal is measured
using CRO.
b) What is an ideal voltage source ? How do you convert a current source into a voltage source ? (3+3)
3. Derive an expression for the voltage across a capacitor at any instant of time during discharging in a series RC circuit excited by a dc voltage source. Represent
it graphically. Define its time constant. 6
4. Obtain an expression for the current, impedance and phase angle of an RL circuit excited by an ac source. 6
5. a) Give the relation between apparent power and real power.
b) Obtain an expression for the resonant frequency of series RLC circuit. What happens to the resonant frequency when the value of R is changed ? (2+4)
6. State Nortons theorem Explain the steps involved in Nortonising the given circuit. 6
P.T.O.
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