Power Systems
A guard ring is used in string type insulator having 3 units to improve string efficiency. Find the capacitance of metal link 2 if pin to earth capacitance of each unit is 1 F?

 0.5 F
 4 F
 2 F
 1 F

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Power Systems
Which of following statement are false

 In a nuclear reactor, multiplication factor is kept almost equal to one.
 A thermal reactor needs a moderator material.
  Nuclear power plants are used as peak load plants only.
 In nuclear power plants, chain reaction is controlled by cadmium rods.

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