SRM University 2007 B.Tech Electronics and Communications Engineering Bank : Electronic Measurement

72. What would the resonant frequency of a wein bridge circuit be if the resistors are l00 K Ohms and the capacitors are 0.1 micro Farad?
73. What are the dectors used for ac bridges?
74. What is wobbluscope?

Part- B
1. Explain in detail the standard RF signal Generator, Modern Laboratory kind signal Generator, Audio Frequency signal Generator with neat diagram.
2. Write short notes on pulse characteristics and Terminology. discuss in detail the laboratory kind square wave and pulse Generator.
3. Explain in detail the programmable pulse Generator, Audio Frequency sin and square wave Generator?
4. With neat diagrams discuss typical function generator and list its features.
5. Draw and discuss the block diagram of sweep generator covering entire frequency band.
6. Discuss in detail the modern wide band sweep generator?
7. Explain in detail the frequency selective wave analyzer and Heterodyne wave analyzer?
8. With block diagram, discuss the working of a spectrum analyzer with its applications.
9. With block diagram, discuss the working of a logic analyzer and state its applications.
10. Discuss in detail the fundamental suppression Distortion analyzer and heterodyne harmonic distortion analyzer?
11. Why Kelvin’s bridge is preferred? Derive the bridge balance formula for whetstone and Kelvin’s bridge.
12. Which measurements can be carried out by Maxwell bridge? Derive the balance formula and expression for the unknown components?
13. How Schering Bridge is used for the measurement of unknown capacitor? Derive its balance formula state it advantages.
14. What is Wien’s bridge? Derive the expression for the frequency

UNIT – IV
PART - A

1. Define CRO (cathode ray oscilloscope)
2. what are the components of CRT
3. what is the function of heater in CRT
4. what is the function of grid in CRT
5. what is the function of accelerating anode in CRT
6. what is the function of phosphor screen in CRT
7. what is the function of horizontal and vertical deflecting plates in CRT
8. what is the function of focusing anode in CRT
9. what kind of focusing used in CRO to deflect electron beam
10. write short notes on electrostatic deflection
11. write short notes on deflecting plates in CRO
12. what is Aquadag
13. what is the function of vertical amplifier in CRO
14. what is the function of time base generator in CRO
15. what is the function of horizontal amplifier in CRO
16. write short notes on attenuators in CRO

Earning:   Approval pending.