LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PHYSICS
FIFTH SEMESTER – NOVEMBER 2004
PH 5401 / PHY 401 – ELECTRONICS II
DATE : 01.11.04 Max. : 100 Marks
TIME :1.00 – 4.00 Time : 3 Hrs
PART A
Answer all questions (10 X 2 = 20)
- Calculate the voltage gain of a non-inverting amplifier with feedback resistance of 20 kW and input resistance of 1 kW.
- State any four properties of an ideal op-amp.
- Define the terms i) Resolution ii) linearity of A/D converter.
- Find the analog output voltage of a 3 bit D/A converter for all possible inputs with K = 1.
- Distinguish between discrete and integrated components.
- Define various scales of integration of integrated circuit.
- What is an instruction cycle?
- What is machine cycle?
- Tabulate the role of status lines of INTEL 8085.
- Write an assembly language program to add two 8 bit numbers.
PART B
Answer any four (4 X 7.5 = 30)
- Set up a circuit to solve the simultaneous equations x + 2 y = 3; 2x + 3y = 5.
- Explain the functioning of successive approximation A/D converter.
- Write note on monolithic and thin film process used in the fabrication of IC’s
- Discuss the functioning of the following i)IO/M ii) INTR iii)INTA iv)HOLD v)HLDA vi) READY vii) RD
- Classify 8085 instruction in various groups. Give an example of each.
PART C
Answer any four (4 X 12.5 = 50)
- Explain the functioning of i) logarithmic amplifier and ii) Integrator.
- With a neat circuit diagram, explain the working of an op-amp based binary weighted D/A Converter.
- Explain with a neat diagram how i) a resistor ii) a transistor and iii) a diode is fabricated in an integrating circuit.
- Draw the block diagram of INTEL 8085 and explain the same in detail.
- Discuss the various types of addressing modes of INTEL 8085 with suitable examples.
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