**********study the following questions and two mark questions thoroughly*** (Later go through the part B questions already issued and e-mailed to you) **** Practice diagrams and study theory in points

BASIC ELECTRICAL AND ELECTRONICS

IMPORTANT QUESTIONS

UNIT –I- ELECTRICAL CIRCUITS AND MEASUREMENTS

1. Explain the working of a Dynamometer wattmeter with a neat sketch. (8) 2. Explain any one type of MI instruments. (12) 3. Explain the working principle of PMMC instruments. (8)4. Explain the construction and principle of operation of single phase energy meter. (16) 5. A series circuit has R=10 , L=50mH, and C=100µF and is supplied with 200V,50Hz.

Find (i) Impedance (ii) current (iii) power (iv) power factor (v) voltage drop across the each element. (10)

6. Find the mesh current and also voltages across each branch using mesh analysis method? 16M

7. Find the node voltages and also currents in each branch using nodal analysis method?16M

UNIT 2- ELECTRICAL MACHINES

1. Explain the construction and principle of operation of a DC generator with neat sketch (16) 2. Derive the equation for induced EMF of a DC machine. (8) 3. Derive the torque equation of DC motor. (8) 4. Describe the construction details of transformer and also explain the principle of operation. (16) 5. Derive the EMF equation of a transformer. (8) 6. Explain the principle of operation of DC Motor. (8)

7. Explain the construction and principle of operation of single phase induction motor. (16)

8. Define induction motor. Explain the double revolving field theory. (8) 9. What are the types of 1φ induction motor? Explain any three. (8) 10. What are the types of DC Generators and write their equations (8 ) 11. problems on dc generator and motor

UNIT -3- SEMICONDUCTOR DEVICES AND APPLICATIONS1. Describe the working of a PN junction diode with neat diagrams. Also explain its V-I characteristics. (16)2.What is a Zener diode? Explain the operation of Zener diode and draw its characteristics. (16)3.Explain the operation of half wave rectifier with neat sketch and derive the necessary expression. (16)4.Explain the operation of centre tapped full wave rectifier with neat diagram and expression. (16)

5. Explain with a neat diagram how the input and output characteristics of a CEconfiguration can be obtained. (16)

6. Explain the working of the CB configuration of a BJT. (16) 7...Discuss zener diode as voltage regulator (8)

UNIT IV – DIGITAL ELECTRONICS

1.Discuss the Boolean laws. (8)2.Explain half adder and full adder. (16)3. Write short notes on: (16)

i). RS-flip flopii). D-flip flopiii). JK -flip flopiv). T-flip flopv). JK-master slave flip flop

4. Explain the operation of various types of shift register. (12)5. Explain (i) Binary weighted A/D converter (ii) R-2R A/D converter (16)6.. With necessary diagrams explain the functioning of the following: (i) Asynchronous counter /ripple counter (decade counter) (10) (ii) synchronous counter (decade counter) (10) 7.Discuss the following A/D converter (i) successive approximation ADC (ii) single slope ramp type ADC (16) (ii)Dual slope integrating type ADC (16)

UNIT V-FUNDAMENTALS OF COMMUNICATION ENGINEERING 1. Write detailed notes on microwave communication. (6)

2. Explain satellite communication system. (8) 3. Draw the block diagram of radio transmitter (AM and FM ) and explain the

function of each block. (16) 4.With a neat block diagram, explain the principle of operation of FAX. (10)

5. With help of a neat diagram explain the basic components of satellite communication. Explain satellite ground station (16)

6.Explain the block diagram of optical fiber communication systems. (8) 7. Draw and explain the functional block diagram of Monochrome TV transmitter and

receiver. 8. Explain AM and FM receiver (12)