In pakistan appliances work on 220v at 50hz and in us appliances work on 110v at 60hz what is basic theory to explain it

1 Answers   SNGPL,

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Why we did not feel electric shock in electric train?

1 Answers   NTPC,

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what is the form factor of DC?

6 Answers  

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What is the formula to calculate the rating of a three phase air circuit breaker

0 Answers  

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What are the fire Estingushers use in electrical fire?

3 Answers  

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0 Answers  

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What is an Isolation Transformer? Where it will use?

3 Answers  

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How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

0 Answers   Allied Group,

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if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?

3 Answers  

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Can we use 1.1x 2 split air-conditioning at a same time in 2kw power loadar

1 Answers  

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In step down transformer (415/200V),mistakenly secondary side is connected to 415V for some hours, what would be result of this condition?

19 Answers   Essar, GAIL, Vizag Steel,

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difine electrical ballast in HPSVL

0 Answers  

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