# Anna University Basic Electronics Engineering Model Test Paper

SECOND SEMSTER- BASIC ELECTRONICS ENGINEERING

MARINE ENGINEERING

Time : Three hours                                                                        Maximum : 100 marks

PART A — (10 ´ 2 = 20 marks)

1.Mention the different types of Potentiometers.

2.Define the Capacitance of a capacitor.

3.Differentiate active and passive transducers.

4.What is Piezo resistive effect?

5.Which transistor configuration will give both current and voltage gain?

6.Why is Peak Inverse Voltage the most important consideration in diodes?

7.What is the Boolean expression for EXCLUSIVE OR gate?

8.Define the Common Mode Rejection Ratio (CMRR) in OP–AMPS.

9.What is frequency modulation?

10What will happen if a radio wave is passed through an ionized medium in the presence of magnetic field?

PART B — (5 ´ 16 = 80 marks)

11.Draw the block diagram of an AM transmitter. Explain the functions of each block.                                             (16)

12.(a)(i)Explain any one application of D.C. Potentiometer with relevant Circuit diagram.                                                   (9)

(ii)Write a short notes on the tolerances in resistors.                        (7)

Or

(b)(i)Write short notes on self–Balancing potentiometer with a neat Circuit diagram.                                                      (9)

(ii)Draw the frequency Spectrum of amplitude modulated wave.     (7)

13.(a)(i)Discuss the advantages and disadvantages of capacitive transducers.                        (ii)Explain with a neat sketch the operation of a LVDT.                    (9)

Or

(b)(i)Write a detailed note on the different types of strain gauges.     (9)

(ii)    Write a short notes on the electrical phenomena used in transducers.                            (7)

14.(a)(i)Explain with a neat diagram the working principle of a full wave rectifier.                               (8)

(ii)Draw and explain the VI characteristics of a P–N junction diode. (8)

Or

(b)(i)Why is the FET characteristics termed as constant current? Explain the pinch – off effect in a J–FET.                      (9)

(ii)Explain the functional operation of a BJT.                                      (7)

15.(a)(i)Describe the various steps involved in the fabrication of a typical monolithic integrated circuit.                                       (10)

(ii)Draw the circuit diagram of Non–inverting amplifier and explain its operation.                      (6)

Or

(b)(i)What are Tristate logic gates? What are its applications?            (8)

(ii)Explain the Universal building blocks.                                            (8)

Anna University Basic Electronics Engineering Model Test Paper