1. Draw a 5-stage multistage impulse voltage generator circuit and explain the working principle. 2. Compare...

  

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1. Draw a 5-stage multistage impulse voltage generator circuit and explain the working principle. 2. Compare the properties of liquid insulators and gaseous dielectrics. 3. Define Basic Insulation Level (BIL) in power systems and Explain the voltage - time relationship with the curve in insulation coordination. 4. What are the three protective methods for surges and explain any two methods with diagrams. 5. What are the different types of surge diverters and draw and explain any two methods? 6. A 12-stage impulse voltage generator has a capacitor of 50. nF with wave front resistance equal to 6500 2. If the wave tail and wave front times of the impulse wave are 0.055 ms and 1.2 us respectively. Calculate (i) wave tail resistance value and (ii) the capacitance of the load capacitor? 1. Draw a 5-stage multistage impulse voltage generator circuit and explain the working principle. 2. Compare the properties of liquid insulators and gaseous dielectrics. 3. Define Basic Insulation Level (BIL) in power systems and Explain the voltage - time relationship with the curve in insulation coordination. 4. What are the three protective methods for surges and explain any two methods with diagrams. 5. What are the different types of surge diverters and draw and explain any two methods? 6. A 12-stage impulse voltage generator has a capacitor of 50. nF with wave front resistance equal to 6500 2. If the wave tail and wave front times of the impulse wave are 0.055 ms and 1.2 us respectively. Calculate (i) wave tail resistance value and (ii) the capacitance of the load capacitor?