Types of circuit breaker

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how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

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Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

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what is the EMF

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Should power factor be low or high?

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who many types of fire explane with exmple

0 Answers   Juniper Networks,

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direction of tarbine& genrator

0 Answers   Sandvik,

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What does the term power factor shows?

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what is differential relay in power transformer??

8 Answers  

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Magnetizing current for induction motor compared to transformer is= A equal B more C less D depends on load

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In transformers Which type of connection is preferred for harmonics to be minimum. primary : secondary star without neutral:open delta star with neutral :open delta star without neutral: delta star with neutral : delta explain why

1 Answers   Genco,

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what is the basic need of domestic loads 1- voltage 2- current

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