Answer / gopal manda

low impedance protection low protection at over voltage,and high impedance protection provide more protection at over voltage.it offer the impedance against over voltage.

In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?

2 Answers  

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which type of effect of turbine and generator reverse power protection ?

0 Answers   NTPC,

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cost of operation of which plant is least?

6 Answers  

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what is the name of the oil is used in transformer?

5 Answers  

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what is the highest transmission voltage in India till now?

36 Answers   Bhel, Electrical,

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If we are importing real power & exporting reactive power then what will be the effect on our system

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Is there any difference between circuit breakers and isolators

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Dear all, Can anybody tell me that how to choose CT for a specific load? I have a 200kw induction motor, which ratio CT should be installed? Is there a formula or calculation that determines the CT ratio for a load? Regards.

2 Answers  

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