EC 6th sem Industrial Automation important questions

1. List any five applications of SCR. Explain the characteristics of IGBT. 
2. Mention difference method of proto connection of SCR. 
3. Explain resonant communication of SCR. 
4. Compare voltage source inverter and current source inverter. 
5. Explain photoelectric control of SCR.
6.  Define inverter and mention any three applications. 
7. Explain need of electronic control of Motors. 
8. Explain PLC up down counter with example. 
9. Explain the characteristics and working principle of mosfet. 
10. Sketch and explain full wave Bridge controlled rectifier. 
11. Sketch and explain RC triggering method to turn on SCR. 
12. Explain four quadrant Chopper with circuit diagram.
13.  Sketch and explain single phase to single phase midpoint cycloconverter. 
14. Sketch and explain the field control method of speed control of DC shunt motor. 
15. Describe general characteristics of registers. 
16. Write the block diagram of PLC system and explain.
17.  Define DCS and mention its features. 
18. Advantages and applications of DCS. 
19. With block diagram explain typical scada system.
20.  Define holding current and break over voltage. 
21. Explain the construction of IGBT. 
22. Explain pulse triggered SCR using u j t relaxation oscillator. 
23. Explain working principle of half bridge inverter. 
24. Sketch the block diagram of speed control of single phase induction motor. 
25. Explain the working of light dimmer circuit. 
26. Explain the block diagram of overall PLC system.
27.  Sketch and explain full wave Bridge controlled rectifier with waveform. 
28. Explain the working of series inverter. 
29. Explain the working of DC link inverter. 
30. Sketch and explain single phase to single phase midpoint cycloconverter. 
31. Explain armature voltage control of speed control and DC motor.
32.  Write the block diagram of PID module.