Answer / anitha

spark is a flash of light produced by electrical discharge
and arc is the phenomenon that occurs between the contacts
of the circuit breaker due to short circuit and also due to
large fault currents

Answer / k.prakashchandra

Arc is continuous(line) and spark is intermittent(dots)

What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?

0 Answers  

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What is mean by Power factor

5 Answers   Fenner,

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what are the types of towers in HT transmission

2 Answers  

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name of good resistance material

1 Answers  

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What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

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is a normal conductor can be used a core in windings if not what is the winding core speciality.

2 Answers  

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how and why are capacitors are used to improve powerfactor?

4 Answers  

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i heard that power factor(PF) is the main concern for industries, if they are maintaining PF around 0.6 they will be fined for that. now the question is, how can they improve the PF ranging between 0.9 to 0.95 which is safe for them i,e escaping from the fine?

5 Answers  

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sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

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How can find thermal state value in relay for calculate thermal overload.

0 Answers  

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what is different between 51N and 51G functions relay?

1 Answers  

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In what way does the variable ratio-arm improve the usefulness of the wheatstone bridge?

1 Answers  

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