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(Solved): 2.3. Explain with neat sketches Cockroft-Walton voltage multiplier circuit. Explain clearly its oper ...



2.3. Explain with neat sketches Cockroft-Walton voltage multiplier circuit. Explain clearly its operation when the circuit is (i) unloaded (ii) loaded. 2.4. Derive an expression for ripple voltage of a multistage Cockroft-Walton Circuit. 2.5. Derive an expression for the voltage output under load condition. Hence, deduce the condition for optimal number of stage if a maximum value of output voltage is desired. 2.6. Describe with neat diagram the principle of operation and application of a symmetrical cascaded rectifier. 2.7. Explain clearly the basic principle of operation of an electrostatic generator. Describe with neat diagram the principle of operation, application and limitations of Van de Graf generator. 2.8. What is a cascaded transformer? Explain why cascading is done? Describe with neat diagram a three stage cascaded transformer. Label the power ratings of various stages of the transformer. 2.9. Draw equivalent circuit of a 3-stage cascaded transformer and determine the expression for short circuit impedance of the transformer. Hence deduce an expression for the short-circuit impedance of an \( n \)-stage cascaded transformer. 2.10. Explain with neat diagram the basic principle of reactive power compensation is high voltage a.c. testing of insulating materials. 2.11. Explain with neat diagram the principle of operation of \( (i) \) series (ii) parallel resonant circuits for generating high a.c. voltages. Compare their performance. 2.12. Explain the series-parallel resonant circuit and discuss its advantages and disadvantages.



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