What are differences between Conventional & Addressable type smoke detectors?

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What is vacuum circuit breaker.define with cause and where be use it device?

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who & how the notations given as RYB to 3phase power supply.

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What is the use of 1:1 isolation t/f in any circuit...?

3 Answers  

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if my load is not in continuous operation so what type of panel is required APFC or fixed capacitor bank without APFC whether C.T is required in both cases compulsory? explain detail

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what is ideal transformer?

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can we keep open the secondary of current transformer?

1 Answers   Jyona Power,

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

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what is corona effect

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What is the difference between sensitive earth fault and restricted earth fault in power transformers?

4 Answers  

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If you see the HRC fuse name plate. Its shown ampere rating shown which is in many KA (like 80KA and so on). any body explain what is meaning of this value?

7 Answers  

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Is it necessary to carry out sheath test after cable jointing? If the value is zero of such instance , is it ok to energize the cable?

1 Answers  

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