what is the difference between relay, contactor

4 Answers   BRSS, Vishay Intertechnology,

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why ht11kv supply needs discharging during shut down time

1 Answers  

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What is Diff btw Fire Alarm & VESDA System???

0 Answers   EFY, Emerson,

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how many joints are allowed in underground HT cable of 1 KM

0 Answers  

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How conventional fire alarm system works?

1 Answers  

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In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

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in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.

1 Answers  

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Why transformer rating in KVA? and Generator also?

6 Answers   Bhel, IEEE, Toyo Denki, Toyo Engineering,

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what modulation is used in landline telephone signals?

2 Answers  

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you are a electrical student, why are you coming for software job.

4 Answers   TCS,

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what is principle of DC machines?

5 Answers   APTransco, NTPC, Wipro,

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which bulb is greater iluminited, 60w and 100w are conected in series?

2 Answers  

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