Answer / prerna

snubber ckt is a series combination of a resistor and a
capacitor. this combination is mainly used across a
thyristor. capacitor reduces the rapid rise in voltage,i.e.
dV/dt, across the thyristor whereas the resistor suppresses
the surge current which would flow across the thyristor.

Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com

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WHAT IS OLTC OF TRANSFORMER? WHERE IS ITS USED EITHER ON PRIMARY OR SECONDARY SIDE OF TRANSFORMER?

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During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

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What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?

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why ie corona losses in tranmission line

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what is transient enclosure vltage , very fast transients, very fast transient over voltages

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what types of cable used in underground coal mining?

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Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?

1 Answers   Bhel,

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Why we use modulus with voltage in stability equation that is P=[E][V]SIN@/X WHY VOLTAGE IS IN MODE VALUE WHAT IS THE REASON?

1 Answers   Bhel,

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When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

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explain the working principal of the circuit breaker?

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how digital four pin earth resistance tester works

2 Answers  

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