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1) Specify the triggering circuits which are used to trigger the  SCR? Describe the waveforms with neat circuit diagram.

2) describe what is power transistor? Specify its operation along with V-I characteristics and prepare down the benefits and drawbacks.

3) Describe the operation of the 1-phase semi converter with essential circuit diagram and waveforms. Estimate the benefits and drawbacks.

4) Describe the operation of the 3-phase full wave rectifier with RL – load and deduce the RMS and average output voltages.

5) Describe the operation of the step up DC chopper with the relevant circuit diagram and the waveform.

6) Describe the operation of 1-phase AC voltage controller with the R-L load with neat diagram and waveform.

7) Describe the operation of 3- phase voltage source inverter (1800 mode) with neat circuit diagrams and waveform.

8) Illustrate the operation of the single phase current source inverter with the neat circuit diagrams and the waveform.

9) describe the requirement of the UPS? Describe its operation with the help of block diagram and specify its drawbacks.

10) Describe the single phase converter fed DC motor drive with the help of circuit diagram and the waveforms.

Electrical & Electronics, Engineering

• Category:- Electrical & Electronics
• Reference No.:- M913118

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